Zeph had $122 more than Ben. After Ben gave $121 to Zeph, Zeph had 5 times as much money as Ben. How much money did Zeph have at first?
| |
Zeph |
Ben |
Comparing between
Zeph and Ben
at first |
$122 more |
|
| Before |
5 u - $121 |
1 u + $121 |
| Change |
+ $121 |
- $121 |
| After |
5 u |
1 u |
Zeph had $122 more than Ben at first. If Ben had another $122 at first, both of them would had the same amount of money.
5 u - 121 = 1 u + 121 + 122
5 u - 121 = 1 u + 243
5 u - 1 u = 121 + 243
4 u = 364
1 u = 364 ÷ 4 = 91
Amount that Zeph had at first
= 5 u - 121
= 5 x 91 - 121
= 455 - 121
= $334
Answer(s): $334
