Upstream sped of boat E is 9 km hr How many more hours will it take to cover a distance of 315 km up...........

Quantitative Aptitude ( CCS) Boats and Streams

Direction : Study the following bar graph and answer the questions that follow:

Upstream sped of boat E is 9 km/hr. How many more hours will it take to cover a distance of 315 km upstream than same distance downstream?

18 hours

20 hours

22 hours

25 hours

15 hours

Upstream speed = 9, speed of boat = 15 km/hr,

so speed of stream = 15-9 = 6 km/hr
Downstream speed = 15+6 = 21 km/hr
So required time = 315/9 – 315/21 = 20 hours

Hence, option 5 is the correct answer.

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