A man rows his boat 95 km downstream and 60 km upstream, taking 2 hours each time. Find the speed of the stream?	Choose the correct choice from the following choices
A) 76 kmph  B) 6 kmph  C) 9 kmph  D) 8 kmph  E) 4 kmph

Rationale: "speed downstream = d / t = 95 / ( 2 ) = 48 kmph speed upstream = d / t = 60 / ( 2 ) = 30 kmph the speed of the stream = ( 48 - 30 ) / 2 = 9 kmph answer : c"
Answer: C