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 spee

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.	9 hrs
B.	4 hrs
C.	7 hrs
D.	<table><tr><td rowspan="2">3</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>9</center></td><td rowspan="2">hrs</td></tr><tr><td style="text-align: center;">17</td></tr></table>
E.
Answer» C. 7 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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