Question

I ran 8kilometers in 20 minutes that cost me $10 how many miles would it be if cost is $30

Answer 1

14.91288 miles

Explanation:

We can use a proportion to solve this problem. Put the distance over the cost. We want our answer in miles so we need to convert 8 kilometers to miles. 1 km = .621371 miles

8 km * .621371 miles/ 1 km = 4.971 miles

4 .971 miles x miles

--------------------- = ------------------

10 dollars 30 dollars

Using cross products

4.971 * 30 = 10x

149.1288= 10 x

Divide by 10 on each side

149.1288/10= 10/10 x

14.91288 =x