SOLUTION: Corey is walking in a 3-mile walkathon on Saturday.In his last walkathon he walked 5 miles in 1.5 hours. based on this rate,how much time will it take corey to walk 3 miles?you

Algebra ->  Proportions  -> Lessons -> SOLUTION: Corey is walking in a 3-mile walkathon on Saturday.In his last walkathon he walked 5 miles in 1.5 hours. based on this rate,how much time will it take corey to walk 3 miles?you       Log On


   

Question 156430: Corey is walking in a 3-mile walkathon on Saturday.In his last walkathon he walked 5 miles in 1.5 hours.
based on this rate,how much time will it take corey to walk 3 miles?you must use a proportion and your answer on the lines below.
SHOW ALL WORK




proportion_________________
answer_____________ hour(s)
Found 2 solutions by kdr, gonzo:
Answer by kdr(11) About Me  (Show Source):
You can put this solution on YOUR website!
Corey walked 5 miles in 1.5 hours, which could be expressed as the ration 1.5 hours:5 miles. The details for the new walkathon of 3 miles will be, in the same pattern, x hours: 3 miles.
The proportion to solve is: 1.5%2F5+=+x%2F3
To solve for x, multiply both sides by 3:
%283%2F1%29%281.5%2F5%29=%283%2F1%29%28x%2F3%29
Simplifying, we have:
4.5%2F5+=+x
.9 = x
So, Corey will take .9 hours to walk 3 miles.
Let's put the result into our original proportion to make sure it's correct:
1.5%2F5+=+.9%2F3
.3+=+.3

Answer by gonzo(654) About Me  (Show Source):
You can put this solution on YOUR website!
proportion is (3 / 5) * 1.5 hours = .9 hours.
answer is .9 hours.
alternatively, hours per mile from last run = 1.5 hours / 5 miles = .3
3 miles at .3 hours per mile = 3 * .3 = .9 hours.