Subject
Quantitative Aptitude
Topic
Speed & Distance
Speed of a boat in standing water is 9 kmph and the speed of the stream is 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:
Speed of a boat in standing water is 9 kmph and the speed of the stream is 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:
ক)
16 hoursখ)
18 hoursগ)
20 hoursঘ)
24 hoursExplanation
Speed upstream = 7.5 kmph. Speed downstream = 10.5 kmph. So, Total time taken = (105/7.5 + 105/10.5) hours = 24 hours.Related questions
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