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The speed of a boat in still water is 18 km/h and the speed of the cur

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| The speed of a boat in still water is 18 km/h and the speed of the current is 6 km/h. In how much time (in hours) will the boat travel a distance of 90 km upstream and the same distance downstream?

A.

B. 12

C.

D. 10

Right Answer is: A

SOLUTION

Let Speed of boat in still water be = x km/h

Let Speed of current be= y  km/h

Upstream speed  km/h

Downstream speed km/h

A.T.Q.

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