ABC26GN3805 · Boats and Streams
Subject: General Aptitude · Chapter: Boats and Streams · Exam: 2008 · Marks: · Difficulty:
A man rows downstream 32 km and 14 km upstream. If he takes 6 hours to cover each distance, then the velocity (in kmph) of the current is
(a)$\frac{1}{2}$
(b)1
(c)$1 \frac{1}{2}$
(d)2
Answer
Explanation
Rate downstream $=\left(\frac{32}{6}\right) \mathrm{kmph}$; Rate upstream $=\left(\frac{14}{6}\right) \mathrm{kmph}$. Velocity of current $=\frac{1}{2}\left(\frac{32}{6}-\frac{14}{6}\right) \mathrm{kmph}$ $=\frac{3}{2} \mathrm{kmph}=1 \frac{1}{2} \mathrm{kmph}$.
Explanation as extracted from the printed page; notation may be imperfect.
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