Nicole and Tiffany had $92 at first. Nicole spent
38 of her money and Tiffany spent
34 of her money. Given that they had $47 left, how much did Nicole have at first?
| |
Nicole |
Tiffany |
Total |
| Before |
8 u |
4 p |
$92 |
| Change |
- 3 u |
- 3 p |
|
| After |
5 u |
1 p |
$47 |
8 u + 4 p = 92 --- (1)
5 u + 1 p = 47 --- (2)
(2) x 4 20 u + 4 p = 188 --- (3)
(3) - (1)
20 u - 8 u = 188 - 92
12 u = 96
1 u = 96 ÷ 12 = 8
Amount that Nicole had at first
= 8 u
= 8 x 8
= $64
Answer(s): $64
