If a boat is moving in upstream with velocity of 14 km/hr and goes downstream with a velocity of 40
km/hr, then what is the speed of the stream ?  Choose the correct choice from the following answers:	A) 13	B) 44	C) 55	D) 6	E) 77
13 km/hr   13nswer:13
<result>A</result>
If a boat is moving in upstream with velocity of 14 km/hr and goes downstream with a velocity of 40
km/hr, then what is the speed of the stream ?