Esther and Pamela had $108 at first. Esther spent
38 of her money and Pamela spent
34 of her money. Given that they had $84 left, how much did Esther have at first?
| |
Esther |
Pamela |
Total |
| Before |
8 u |
4 p |
$108 |
| Change |
- 3 u |
- 3 p |
|
| After |
5 u |
1 p |
$84 |
8 u + 4 p = 108 --- (1)
5 u + 1 p = 84 --- (2)
(2) x 4 20 u + 4 p = 336 --- (3)
(3) - (1)
20 u - 8 u = 336 - 108
12 u = 228
1 u = 228 ÷ 12 = 19
Amount that Esther had at first
= 8 u
= 8 x 19
= $152
Answer(s): $152
