the excursion boat on the river takes 2 1/2 hours to make the trip to a point 12 miles upstream & to return. If the rate at which the boat travels in still water is 5 times the rate of the river current, what is the rate of the current?
Total distance traveled by the boat = 12 * 2
= 24 miles. (upstream and back)
So, the boat travels 24 miles in 2 1/2 hours ? miles in 1 hour
The rate at which the boat travels
= 24 * 1 / 2.5 = 9.6 miles/hour
Assume the rate of current = x,
then the rate of travel in still water = 5x
Therefore, 5x = 9.6
x = 9.6/5 = 1.92 miles/hour
This means that current moves 1.92 miles per hour
Content will be erased after question is completed.
Enter the email address associated with your account, and we will email you a link to reset your password.
Forgot your password?