Question

Your car can go 2/7 of the way on 3/8 of a tank of gas how far can you go on the remaining gas?

A proportion that can be used is a/b=c/d

Answer 1

10/21 of the distance

Explanation:

2/7 distance

------------------

3/8 tank

The rest of the tank is 8/8 - 3/8 = 5/8

2/7 distance x

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

3/8 tank 5/8 tank

Using cross products

2/7 * 5/8 = 3/8x

10/56 = 3/8x

Multiply each side by 8/3

10/56 * 8/3 = 3/8x * 8/3

10/3 * 8/56=x

10/3 * 1/7 =x

10/21 =x

10/21 of the distance