- A4 hours
- B4.83 hours
- C3.5 hours
- D6 hours
Step-by-Step Solution
Stream = 5 ÷ 2 = 2.5 km/h. Downstream = 12 + 2.5 = 14.5 km/h. Time = 58 ÷ 14.5 = 4 hours. (4.83 h forgets the current.)
Answer: A) 4 hours
A coconut floats 5 km down the Godavari in 2 hours. A boat whose speed in still water is 12 km/h travels 58 km downstream on the same river. How long does it take?
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