Question

The excursion boat on the river takes 2½ hours to make the trip to a point 12 miles upstream and 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?

Answer 1

x= Current rate
Boat in Still water =B=
(2.5)(B-x)=24
B=5x

Answer 2

2.5B-2.5x=24
B=5x

Using Subsitution

2.5(5x)-2.5(x)=24

Solve for x

Answer 3

2.4?

Answer 4

Yes