ABC26GN3795 · Boats and Streams

Subject: General Aptitude · Chapter: Boats and Streams · Exam: · Marks: · Difficulty:

A man takes 3 hours 45 minutes to row a boat 15 km downstream of a river and 2 hours 30 minutes to cover a distance of 5 km upstream. Find the speed of the river current in km / hr.

Answer

Answer (as printed):

Explanation

Rate downstream =  km/hr =  15 ×  km/hr = 4 km/hr. 3  15   3  4  5   2 Rate upstream =  km/hr =  5 ×  km/hr = 2 km/hr. 1  5  2  2 1 ∴ Speed of current = (4 − 2) km/hr = 1 km/hr. 2

Explanation as extracted from the printed page; notation may be imperfect.

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