The distance between A and B is 999 km. An express train leaves place A at 6am and runs at a speed of 55.5 km/hr. The train stops on the way for 1 hour 20 minutes. It reaches B at
1.20 am
12 pm
6 pm
6 pm
A certain distance is covered by a cyclist at a certain speed. If a jogger covers half the distance in double the time, the ratio of the speed of the jogger to that of the cyclist is
1 : 4
4 : 1
1 : 2
1 : 2
If a boy walks from his house to school at the rate of 4 km per hour, he reaches the school 10 minutes earlier than the scheduled time. However, if he walks at the rate of 3 km per hour, he reaches 10 minutes late. Find the distance of his school from his house.
5 km
4 km
6 km
6 km
A car covers of the distance from A to B at the speed of 8km/hr, of the distance at 25 km per hour and the remaining at the speed of 20 km per hour. Find the average speed of the whole journey.
12.625 km/hr
13.625 km/hr
14.625 km/hr
14.625 km/hr
Walking at 3 km per hour, Pintu reaches his school 5 minutes late. If he walks at 4 km per hour he will be 5 minutes early. The distance of Pintu's school from his house is
2 km
A man driving at of his original speed reaches his destination 20 minutes later than the usual time. Then the usual time is
45 minutes
60 minutes
75 minutes
75 minutes
A motor boat, travelling at the same speed, can cover 25 km upstream and 39 km downstream in 8 hours. At the same speed, it can travel 35 km upstream and 52 km downstream in 11 hours. The speed of the stream is
2 km/hr
3 km/hr
4 km/hr
4 km/hr
A motor-boat can travel at 10 km/hour in still water. It travelled 91 km downstream in a river and then returned to the same place, taking altogether 20 hours. Find the rate of flow of river.
3 km/hour
4 km/hour
2 km/hour
2 km/hour
If A travels to his school from his house at the speed of 3 km/hr, then he reaches the school 5 minutes late. If he travels at the speed of 4 km/hr, he reaches the school 5 minutes earlier than school time. The distance of his school from his house is
1 km
2 km
3 km
3 km
Two places A and B are 100 km apart on a highway. One car starts from A and another from B at the same time. If the cars travel in the same direction at a constant speed, they meet in 5 hours. If the cars travel towards each other, they meet in 1 hour. What is the speed of the car running faster?
60 km/hr
50 km/hr
40 km/hr
40 km/hr