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1. The speed of a boat in still water is 15 km/hr and the rate of current is 3 km/hr. The distance travelled downstream in 24 minutes is
3.6 km | 2.4 km | 3.2 km | 7.2 km |
4. A mans speed with the current is 15 km/hr and the speed of the current is 2.5 km/hr. The mans speed against the current is:
8.5 km/hr | 9 km/hr | 10 km/hr | 12.5 km/hr |
5. The speed of a boat in still water is 8 kmph. If it can travel 1 km upstream in 1 hr, what time it would take to travel the same distance downstream?
1 minute | 2 minutes | 3 minutes | 4 minutes |
6. Speed of a boat in standing water is 14 kmph and the speed of the stream is 1.2 kmph. A man rows to a place at a distance of 4864 km and comes back to the starting point. The total time taken by him is:
700 hours | 350 hours | 1400 hours | 1010 hours |
8. A boat running downstream covers a distance of 22 km in 4 hours while for covering the same distance upstream, it takes 5 hours. What is the speed of the boat in still water?
5 kmph | 4.95 kmph | 4.75 kmph | 4.65 kmph |
9. A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively?
2 : 1 | 3 : 2 | 8 : 3 | Cannot be determined |
10. In a river flowing at 2 km/hr, a boat travels 32 km upstream and then returns downstream to the starting point. If its speed in still water be 6 km/hr, find the total journey time.
10 hours | 12 hours | 14 hours | 16 hours |
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