At first, Paul had $160 and Billy had $100. Each of them bought a shirt at the same price. Paul now has five times as much money as Billy. How much did each of them pay for the shirt?
| |
Paul |
Billy |
Difference |
| Before |
$160 |
$100 |
$60 |
| Change |
- ? |
- ? |
|
| After |
5 u |
1 u |
4 u |
Since Paul and Billy each bought a shirt at the same price, the difference in the amounts each had remains the same.
Difference in the amounts between Paul and Billy
= 5 u - 1 u
= 4 u
4 u = 160 - 100
4 u = 60
1 u = 60 ÷ 4 = 15
Amount that each of them paid for the shirt
= 100 - 15
= $85
Answer(s): $85
