David and Jeremy had $198 at first. David spent $54 while Jeremy spent $18 less than him. The amount Jeremy had left was
27 of the amount David had left. How much did David have at first?
| |
David |
Jeremy |
Total |
| Before |
2 u + 54 |
7 u + 36 |
198 |
| Change |
- 54 |
- 36 |
|
| After |
2 u |
7 u |
|
Amount that Jeremy had spent
= 54 - 18
= $36
Total amount that David and Jeremy had at first
= 2 u + 54 + 7 u + 36
= 9 u + 90
9 u + 90 = 198
9 u = 198 - 90
9 u = 108
1 u = 108 ÷ 9 = 12
Amount that David had at first
= 7 u + 54
= 7 x 12 + 54
= 84 + 54
= $138
Answer(s): $138
