Billy and Xavier had $159 at first. Billy spent $71 while Xavier spent $33 less than him. The amount Xavier had left was
37 of the amount Billy had left. How much did Billy have at first?
| |
Billy |
Xavier |
Total |
| Before |
3 u + 71 |
7 u + 38 |
159 |
| Change |
- 71 |
- 38 |
|
| After |
3 u |
7 u |
|
Amount that Xavier had spent
= 71 - 33
= $38
Total amount that Billy and Xavier had at first
= 3 u + 71 + 7 u + 38
= 10 u + 109
10 u + 109 = 159
10 u = 159 - 109
10 u = 50
1 u = 50 ÷ 10 = 5
Amount that Billy had at first
= 7 u + 71
= 7 x 5 + 71
= 35 + 71
= $106
Answer(s): $106
