Problema Solution

a boat travels up stream at 12 miles per hour and down stream at 18 miles per hour. How far up stream did the boat travel if the total trip time was 5 hours?

Answer provided by our tutors

Total time = 5 hours = time upstream + time downstream

 

time = distance/speed

Let distance = x

time upstream =x/12

time downstream = x/18

find x

5 = x/12 + x/18

x=36 miles 

The boat traveled 36 miles upstream