27.
A motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and
comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr)
is:
A. 4 B. 5
C. 6 D. 10
Answer: Option B
Explanation:
Let
the speed of the stream be x km/hr. Then,
Speed
downstream = (15 + x) km/hr,
Speed
upstream = (15 - x) km/hr.
Title :
BOATS and STREAMS Q27
Description : 27. A motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The spee...
Rating :
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