Archie and Charlie had $108 at first. Archie spent $28 while Charlie spent $18 less than him. The amount Charlie had left was
25 of the amount Archie had left. How much did Archie have at first?
| |
Archie |
Charlie |
Total |
| Before |
2 u + 28 |
5 u + 10 |
108 |
| Change |
- 28 |
- 10 |
|
| After |
2 u |
5 u |
|
Amount that Charlie had spent
= 28 - 18
= $10
Total amount that Archie and Charlie had at first
= 2 u + 28 + 5 u + 10
= 7 u + 38
7 u + 38 = 108
7 u = 108 - 38
7 u = 70
1 u = 70 ÷ 7 = 10
Amount that Archie had at first
= 5 u + 28
= 5 x 10 + 28
= 50 + 28
= $78
Answer(s): $78
