SSC NTA Delhi University Non-Teaching 2021 Mock Test Quantitative Aptitude Speed Time and Distance Boat and River
A group of men can row a canoe at 40 kilometers per hour in still water. After rowing for 2 hours the stream flows downhill and they take two more hours to reach a point. On the way back by the same route the time taken is two times the time taken for onward journey. What is the speed of the stream?
1
10 km/hour
2
20 km/hour
3
30 km/hour
4
40 km/hour