1)Distance between two stations A andBis 680 km. A train cover the journey fromA to B at 42 km per hour and returnsback to A with a uniform speed of 36 kmper hour. Find the average speed of thetrain during the whole journey?
2)In one hour, a boat goes at 20 km/hr
along the river and 4 km/hr against the
river. The speed of the boat in still water(in km/hr) is:
3)A superfast express running at 84 kmphovertakes a bike running at 30 kmph in24 seconds. What is the length of the
train in meters?
4)Speed of a boat in still water andspeedof current is in ratio 4:3. If the
difference between distance covered by
boat in 3 hours upstream and in 3 hoursd is 54 km. Speed of boat in
still water?
5) A Train X starts from town A towards townB at 6 00 am and reaches B at 2:00
pm. Train Y starts from town B towards
town A at 7:00 am and reaches A at 3
00 pm. At what time do both the trains
cross?
6)Without stoppages, a train travels
certain distance with an average speed
of 80 km/h, and with stoppages, it
covers the same distance with an
average speed of 60 km/h. How many
minutes per hour the train stops?
7)Two trains of equal length take 10
seconds and 15 seconds respectively to
cross a telegraph post. If the length of
each train be 120 metres, in what time
(in seconds) will they cross each other
travelling in opposite direction?
8 )Normalspeed of a boat in still water is 4times the speed of the river. The boatgoes upstream and takes 4 hrs to reachQ from P. By what percent should theboat increase/decrease its speed if it's to reach P from Q in exactly 3
hours?
9)Two towns A and B are 170 km apart, atrain starts at 9 a.m. from A towards B
at a speed of 40 km/hr, at 11 a.m
another train starts from B towards A at a speed of 50 km/hr. When will the two trains meet?
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