Natalie and Esther had $96 at first. Natalie spent
37 of her money and Esther spent
45 of her money. Given that they had $53 left, how much did Natalie have at first?
|
Natalie |
Esther |
Total |
Before |
7 u |
5 p |
$96 |
Change |
- 3 u |
- 4 p |
|
After |
4 u |
1 p |
$53 |
7 u + 5 p = 96 --- (1)
4 u + 1 p = 53 --- (2)
(2) x 5 20 u + 5 p = 265 --- (3)
(3) - (1)
20 u - 7 u = 265 - 96
13 u = 169
1 u = 169 ÷ 13 = 13
Amount that Natalie had at first
= 7 u
= 7 x 13
= $91
Answer(s): $91