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Two boats A and B start towards each other from two places, 108 km apart. Speed of the boats A and B in still water are 12 km/h and 15 km/h respectively. If A proceeds down and B up the stream, they will meet after:

A. 4.5 hours

B. 4 hours

C. 5.4 hours

D. 6 hours

Answer: Option B

Solution(By Examveda Team)

Let the speed of the stream be x kmph and both the boats meet after t hour.
According to the question,
(12 + x) × t + (15 - x) × t = 108
Or, 12t + 15t = 108
Or, 27t = 108
∴ t = $$\frac{{108}}{{27}}$$ = 4 hours

This Question Belongs to Arithmetic Ability >> Speed Time And Distance

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Comments ( 1 )

  1. Namrita Srivastava
    Namrita Srivastava :
    4 years ago

    A man rows to a place At a distance of 35km and back.he takes a total of 10hr 30min.he found that he could row 5 km with the stream in same time as he can row 4km against the stream find the rate of the flow of the stream.

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