A boat can travel with a speed of 13 km/hr in still water. If the speed of stream is 4 km/hr in the same direction, time taken by boat to go 63 km in opposite direction is:

A boat can travel with a speed of 13 km/hr in still water. If the s

1.	A boat can travel with a speed of 13 km/hr in still water. If the speed of stream is 4 km/hr in the same direction, time taken by boat to go 63 km in opposite direction is:
A.	8 hrs
B.	4 hrs
C.	7 hrs
D.	9 hrs
Answer» D. 9 hrs

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A boat can travel with a speed of 13 km/hr in still water. If the speed of stream is 4 km/hr in the same direction, time taken by boat to go 63 km in opposite direction is:

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