The current of a stream runs at the rate of 5 kmph. A boat goes 6 km and back to the starting point in 2 hours, then find the speed of the boat in still water?	Choose the most appropriate option.
A) A)7.63 B) B)2.6 C) C)8.83 D) D)6.69 E) E)3
S = 5   M = x   DS = x + 5   US = x - 5   6/(x + 5) + 6/(x - 5) = 2   x = 8.83   Answer:8.83
<result>C</result>
The current of a stream runs at the rate of 5 kmph. A boat goes 6 km and back to the starting point in 2 hours, then find the speed of the boat in still water?