|
60.
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Speed
of a boat in standing water is 9 kmph and the speed of the stream is 1. 5
kmph. A man rows to a place at a distance of 105 km and comes back to the
starting point. The total time taken by him is
|
|
|
A. 16 hours
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B. 18 hours
|
|
|
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C. 20 hours
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D. 24 hours
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Answer:
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Speed
upsteram
|
=
7.5 kmph.
|
|
Speed
downsteram
|
=
10.5 kmph.
|
|
Total
time taken
|
=[10.5/7.5
+ 105/10.5]hours
|
|
= 24
hours.
|
Title : BOATS and STREAMS Q60
Description : 60. Speed of a boat in standing water is 9 kmph and the speed of the stream is 1. 5 kmph. A man rows to a place at a ...
Rating : 5
