Chain
Rule
1.
If
20 men can build a wall 56 m long in 6 days, what length of a similar wall can
be built by 35 men in 3 days ?
(1) 50 (2) 47 (3) 43 (4) 49 (5) None of these
2.
If 15 men, working 9 hours a day, can reap a
field in 16 days, in how many days will 18 men reap the field, working 8 hours
a day ?
(1) 15 (2) 10 (3) 20 (4) 25 (5) None of these
3.
If
9 engines consume 24 metric tones of coal, when each is working 8 hours a day,
how much coal will be required for 8 engines, each running 13 hours a day, it
being given that 3 engines of former type consume as much as 4 engines of
letter type ?
(1) 28 metric tones (2) 26 metric tones (3) 30 metric tones (4) 33 metric tones (5) None of these
4.
A
contract is to be completed in 46 days and 117 men were set to work, each
working 8 hours a day. After 33 days, 
of the work may be employed so that the work
may be completed in time, each man now working 9 hours a day ?
of the work may be employed so that the work
may be completed in time, each man now working 9 hours a day ?
(1) 71 (2) 51 (3) 81 (4) 27 (5) None of these
5.
A
garrison of 3300 men had provisions for 32 days, when given at the rate of 850
gms per head. At the end of 7 days, a reinforcement arrives and it was found
that the provisions will last 17 days more, when given at the rate of 825 gms
per head. What is the strength of the reinforcement ?
(1) 1800 (2) 1900 (3) 1500 (4) 1700 (5) None of these
6.
A
man completes 
of a job in 10 days. At this rate, how many
more days will it take him to finish the job ?
of a job in 10 days. At this rate, how many
more days will it take him to finish the job ?
(1) 5 (2) 6 (3) 7 (4) 7
(5) None of these
(5) None of these
7.
The
cost of 16 packets of salt, each weighing 900 grams is Rs. 28. What will be the
cost of 27 packets, if each packet weighs 1 kg ?
(1) Rs. 52.50 (2) Rs. 56 (3) Rs. 58.50
(4) Rs. 64.75 (5) None of these
8.
Running
at the same constant rate, 6 identical machines can produce a total of 270
bottles per minute. At this rate, how many bottles could 10 such machines
produce in 4 minutes ?
(1) 648 (2) 1800 (3) 2700 (4) 10800 (5) None of these
9.
If
8 men can reap 80 hectares in 24 days, then how many hectares can 36 men reap
in 30 days ?
(1) 350 (2) 400 (3) 425 (4) 450 (5) None of these
10.
If
5 men or 9 women can do a piece of work in 19 days, then in how many days will
3 men and 6 women do the same work ?
(1) 12 (2) 15 (3) 18 (4) 21 (5) None of these
11.
49
pumps can empty a reservoir in 6 days, working 8 hours a day. If 196 pumps are
used for 5 hours each day, then the same work will be completed in :
days, working 8 hours a day. If 196 pumps are
used for 5 hours each day, then the same work will be completed in :
(1) 2 days (2) 2 days (3) 2
days (4) 3 days
(5) None
of these
days (3) 2 days (4) 3 days
(5) None
of these
12.
If
7 spiders make 7 webs in 7 days, then 1 spider will make 1 web in how many days
?
(1) 1 (2) 
(3) 7 (4) 49
(5) None
of these
(3) 7 (4) 49
(5) None
of these
13.
If
18 pumps can raise 2170 tonnes of water in 10 days, working 7 hours a day; in
how many days will 16 pumps raise 1736 tonnes of water, working 9 hours a day ?
(1) 6 (2) 7 (3) 8 (4) 9
(5) None of these
14.
400
persons, working 9 hours per day complete 
th
of the work in 10 days. The number of additional persons, working 8 hours per
day, required to complete remaining work in 20 days, is :
th
of the work in 10 days. The number of additional persons, working 8 hours per
day, required to complete remaining work in 20 days, is :
(1) 675 (2) 275 (3) 250 (4) 225 (5) None of these
15.
20
men complete one-third of a piece of work in 20 days. How many more men should
be employed to finish the rest of the work in 25 more days ?
(1) 10 (2) 12 (3) 15 (4) 20 (5) None of these
16.
If of a cistern is filled in 1 minute, how much
more time will be required to fill the rest of it ?
of a cistern is filled in 1 minute, how much
more time will be required to fill the rest of it ?
(1) 30 sec (2) 40 sec (3) 36 sec (4) 24sec (5) None of these
17.
If
x men, working x hours per day, can do x units of work in x days, then y men,
working y hours per day would be able to complete how many units of work in y
days ?
(1) 
(2)
(3) 
(4) 
(5) None of these
(2) (3) (4) (5) None of these
18.
If
a certain number of workmen can do a piece of work in 25 hours, in how many
hours will another set an equal number of men, do a piece of work, twice as
great, supposing that 2 men of the first set can do as much work in an hour, as
3 men of the second set do in an hour ?
(1) 60 (2) 75 (3) 90 (4) 105 (5) None of these
19.
In
a camp, 95 men had provisions for 200 days. After 5 days, 30 men left the camp.
For how many days will the remaining food last now ?
(1) 180 (2) 285 (3) 139
(4) 139
(5) None of these
(4) 139
(5) None of these
20.
A
garrison of 500 men had provisions for 27 days. After 3 days a reinforcement of
300 hundred men arrived. For how many more days will the remaining food last
now ?
(1) 15 (2) 16 (3) 17 (4) 18
(5) None
of these
(4) 18
(5) None
of these
21.
12
men and 18 boys, working 7 hours a day, can do a piece of work in 60
days. If a man works equal to 2 boys, then how many boys will be required to
help 21 men to do twice the work in 50 days, working 9 hours a day ?
hours a day, can do a piece of work in 60
days. If a man works equal to 2 boys, then how many boys will be required to
help 21 men to do twice the work in 50 days, working 9 hours a day ?
(1) 30 (2) 42 (3) 48 (4) 90 (5) None of these
22.
If
3 men or 6 boys can do a piece of work in 10 days, working 7 hours a day; how
many days it will take to complete a piece of work twice as large with 6 men
and 2 boys working together for 8 hours a day ?
(1) 6 (2) 7 (3) 8 (4) 9 (5) None of these
(3) 8 (4) 9 (5) None of these
23.
2
men and 7 boys can do a piece of work in 14 days; 3 men and 8 boys can do the
same in 11 days. Then, 8 men and 6 boys can do three times the amount of this
work in :
(1) 18 days (2) 21 days
(3) 24 days (4) 30
days (5) None of these
24.
Four examiners can
examine a certain number of answer papers in 10days by working for 5 hrs a day.
For how many hours in a day would 2 examiners have to work in order to examine
twice the number of answer papers in 20 days?
(1) 8hrs (2) 7hrs (3) 10hrs (4) 8hrs (5) None of these
hrs (3) 10hrs (4) 8hrs (5) None of these
25.
9 men working for 7hrs
a day can complete a piece of work in 15days. In how many days can 6 men
working for 9hrs a day, complete the same piece of work?
(1) 17 days
(2) 16
days (3) 16 days (4) 15 days (5) None of these
days
(2) 16 days (3) 16 days (4) 15 days (5) None of these
26.
A certain number of
persons can complete a wok in 100days. If there be 10 persons less, than it
would have taken 10 days more for the work to be completed. The number of
persons in the beginning was
(1) 90 (2) 105 (3) 110 (4) 120 (5) None of these
27.
Five painters can
paint a wall 100m long in 10 days of 8 h each. How many days of 6 h each will
it take for 8 men to paint a wall 30 m long
(1) 2 days (2) 2 days (3)
5 days (4) 10 days (5) None of these
days (2) 2 days (3)
5 days (4) 10 days (5) None of these
28.
The work done by (x -
1) men in (x + 1) days and the work done by (x + 1) men in (x + 2) days are in
the ratio 5 : 6. Find x.
(1) 10 (2) 6 (3) 8 (4) 16 (5) None of these
29.
There was food
sufficient for 150 soldiers for 50 days. After 20 days, 50 soldiers left the
fort. How many days will the remaining food last?
(1) 45 days (2) 4 days (3) 50 days (4) 60 days (5) None of these
30.
There was food
sufficient in a fort for 32 days. After 4 days as 150 more soldiers came, the
food will last for 21 days. How many soldiers were there in the fort in the
beginning?
(1) 300 (2) 450 (3) 600 (4) 150 (5) None of these
31.
If 36 men can dig a
trench 200m long, 3m wide and 2m deep in 6 days working 10 h a day, in how many
days, working 8 h a day will 10 men dig a trench 100 m long, 4m wide and 3m
deep
(1) 15 days (2) 27days (3) 20days (4) 54days (5) None of these
32.
76 ladies complete a
job in 33 days. Due to some reason some ladies did not join the work and
therefore it was complete in 44 days. The number of ladies who did not report
for the work
(1) 17 (2) 18 (3) 19 (4) 20 (5) None of these
33.
56 men can complete a
piece of work in 24 days. In how many days can 42 men complete the same piece
of work?
(1) 18 (2) 32 (3) 98 (4) 48 (5) None of these
34.
28 men can complete a
piece of work in 21 days. How many more man must be hired to complete the work
in 14 days?
(1) 18 (2)
10 (3) 8 (4) 14 (5) None of these
36.
Three man or eight
boys can do a piece of work in 17 days. How many days will 2 man and six boys
together to finish the same work?
(1) 9 days (2) 11 days (3) 14 days (4) 12 days (5) None of
these
36.
If 3 men or 6 women can do a piece of work in 16
days, then in how many days can 12 men and 8 women do the same piece of work?
(1) 4 days (2) 5 days (3) 3 days
(4) 2 days (5)
None of these
38.
9 children can
complete a piece of work in 360 days. 18 men can complete the same piece of
work in 72 days and 12 women can complete the same piece of work in 162 days.
In how many days can 4 men, 12 women and 10 children together complete the same
piece of work?
(1) 124 (2) 81 (3) 68 (4) 96 (5) None of these
39. 3 men can complete a piece of work in 6 days. 5 women can complete the
same work in 18 days. In how many days will 4 men and 10 women together
complete the same work ?
(1) 3 days (2) 5 days (3) 2 days (4) 4 days (5) None of these
40.
Three men, four women
and six children can complete a work in 7 days. A woman does double the work a
man does and a child does half the work a man does. How many women alone can
complete this work in 7 days?
(1) 8 (2) 7 (3) 12 (4) Can’t be determined (5) None of these
41.
6 men and 8 women
together can complete a piece of work in 10 days. Work done by a woman in one
day Is equal to half the work done by a man in one day. If 10 women are working
alone, then in how many days will the work get completed?
(1) 10 days (2) 16 days (3) 14 days (4) Can’t be
determined (5) None of
these
42.
A can do a piece of
work in 7 days of 9 hours each and B can do it in 6 days of 7 hours each. How
long will they take to do it, working together 8
hours a day ?
hours a day ?
(1) 4 days
(2) 5 days (3) 3 days (4) 2 days (5) None of these
43.
P can complete a work
in 12 days working 8 hours a day. Q can complete the same work in 8 days a day.
If both P and Q work together, working 8 hours a day, in how many days can they
complete the work ?
(1) 5
(2) 5
(3) 6 (4) 6 (5) None of these
(2) 5 (3) 6 (4) 6 (5) None of these
44.
12 men can complete a
piece of work in 4 days, while 15 women can complete the same work in 4 days. 6
men start working on the job and after working for 2 days, all of them stopped
working. How many women should be put on the job to complete the remaining
work, if it is to be completed in 3 days ?
(1) 15 (2) 18 (3) 22 (4) Data inadequate (5) None of these
45.
If 90 men can
do a certain job in 16 days, working 12 hours per day, then the part of that
work which can be completed by 70 men in 24 days, working 8 hours per day is
(1) 
(2)
(3) 
(4) (5) None of these
(2) (3) (4) (5) None of these
46.
6 men or 12
women can do a piece of work in 20 days. In how many days can 8 men and 16
women do twice as big as this work ?
(1) 2 days (2) 5 days (3) 15 days (4) 10 days (5) None of these
47.
A 10 hectare
field is reaped by 2 men, 3 women and 4 children together in 10 days. If
working capabilities of a man, a woman and a child are in the ratio of 5 : 4 :
2, then a 16 hectare field will be reaped by 6 men, 4 women and 7 children in
(1) 5 days (2) 6 days (3) 7 days (4) 8 days (5) None of these
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