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Quantitative Aptitude

Boats & Streams

In a stream, ...

Question

In a stream, B lies in between A and C such that it is equidistant from both A and C. A boat can go from A to B and back in 6 h 30 minutes while it goes from A to C in 9 h. How long would it take to go from C to A?

A

3.75 h

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B

4 h

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C

4.25 h

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D

4.5 h

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Solution

The correct option is B 4 h
Since A to C is double the distance of A to B, it is evident that the time taken for A to C and back would be double the time taken from A to B and back (i.e. double of 6.5 hours = 13 hours). Since going from A to C takes 9 hours, coming back from C to A would take 4 hours (Since 9 + 4 = 13).

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