question_answer

A boatman can row his boat at a speed of 8 km per hour in still water. If a river flows at a speed of 2 km per hour, then how long will the boatman take to row his boat 1200 metres against the direction of the current?

A) 12 minutes                    

B) 13 minutes

C) 14 minutes                    

D) 15 minutes

Correct Answer: A

Solution :

Required time, the boatman will take to row his boat   = 12 minutes