Zeph had $77.30 more than Cole. After Cole had spent
29 of his money, Zeph had $100.10 more than Cole. How much money did Zeph have at first?
| |
Zeph |
Cole |
More |
| Before |
9 u + $77.30 |
9 u |
$77.30 |
| Change |
|
- 2 u |
|
| After |
9 u + $77.30 |
7 u |
2 u + $77.30 |
Zeph had $100.10 more than Cole in the end.
9 u + 77.30 - 7 u = 100.10
2 u + 77.30 = 100.10
2 u = 100.10 - 77.30
2 u = 22.80
1 u = 22.80 ÷ 2 = 11.40
Amount that Zeph had at first
= 9 u + 77.30
= 9 x 11.40 + 77.30
= 102.60 + 77.30
= $179.90
Answer(s): $179.90
