সব প্রশ্নে ফিরে যান
Math
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) 30 minutes
সঠিক উত্তর
B) 60 minutes
C) 90 minutes
D) 120 minutes