A man rowed 3 A man rowed 3 miles upstream in 90 minutes. If the river flowed with a current of 2 miles per hour, how long did the man's return trip take?
a. 20 mins
b. 30 mins
c. 45 mins
d. 60 mins
e. 80 mins

I checked and the answer is 30 minutes, but I have absolutely no idea on how to get it.

Question

A man rowed 3 A man rowed 3 miles upstream in 90 minutes. If the river flowed with a current of 2 miles per hour, how long did the man's return trip take?
a. 20 mins
b. 30 mins
c. 45 mins
d. 60 mins
e. 80 mins

I checked and the answer is 30 minutes, but I have absolutely no idea on how to get it.

anonymous · Answer

assuming the the man is rowing at constant speed upstream and downstream

anonymous · Answer

let me ask you a simple question, if you are on a moving belt and it's moving at a speed of 1mile/hr, with how much speed you need to run to stay where you are { with out moving with belt. }

anonymous · Answer

2mile/hr?

anonymous · Answer

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