The current of a stream at 1 kmph. A motor boat goes 35 km upstream and back to the starting point in 12 hours. The speed of the motor boat in still water is?
Select the correct option:
A) 5 kmph B) 1 kmph C) 6 kmph D) 2 kmph E) 3 kmph
The current of a stream = 1   The speed of the motor boat in still water= x   Speed downstream = x + 1   Speed upstream = x - 1   since distance = speed Ã— time, we have   35/(x + 1) + 35/(x - 1) = 12 kmph=6 kmph   Answer : Option 6 kmph
<result>C</result>
The current of a stream at 1 kmph. A motor boat goes 35 km upstream and back to the starting point in 12 hours. The speed of the motor boat in still water is?