Question

A man can row 6 km/h in still water. If the speed of the current is 2 km/h, it takes 3 hours more in upstream than in the downstream for the same distance. The distance is

• A. 30
• B. 24
• C. 20
• D. 32

Answer 1

Answer:

B. 24

Let the required distance be x km.

$\frac{x}{6-2}-\frac{x}{6+2}=3$

$\frac{x}{4}-\frac{x}{8}=3$

$\frac{2x-x}{8}=3$

$x=24km$