- A75 minutes
- B72 minutes
- C60 minutes
- D80 minutes
Step-by-Step Solution
Up: 3 ÷ 4 = 0.75 h = 45 min. Down: 3 ÷ 6 = 0.5 h = 30 min. Total = 75 minutes. (72 min wrongly uses 5 km/h both ways.)
Answer: A) 75 minutes
A rower's speed in still water is 5 km/h and the river flows at 1 km/h. How many minutes does he need to row 3 km up to a temple ghat and come back?
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