a boatman selling a boat along river flow.if he sell boat in steal water at 3m/sec and flow of river is 2m/sec.how much time he will take to sell 100m.	Answers.
A) 30 B) 10 C) 15 D) 20 E) 25

Rationale: net speed = 3 + 2 = 5 m / sec distance = 100 m time = 100 / 5 = 20 sec answer d
Answer: D