Quantitative Aptitude Ques 1246

Question: .

A boat running downstream covers a distance of 12 km in 2 h while for covering the same distance upstream it takes 3 h. What is the speed of the boat in still water?

Options:

A) 8 km/h

B) 4 km/h

C) 5 km/h

D) 9 km/h

Show Answer

Answer:

Correct Answer: C

Solution:

  • Downstream speed $ =( \frac{12}{2} )km/h=6km/h $ Upstream speed $ =( \frac{12}{3} )km/h=4km/h $

$ \therefore $ Speed in still water $ =\frac{1}{2}(6+4)=5km/h $

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