Tom had $132 more than Elijah. After Elijah gave $126 to Tom, Tom had 3 times as much money as Elijah. How much money did Tom have at first?
| |
Tom |
Elijah |
Comparing between
Tom and Elijah
at first |
$132 more |
|
| Before |
3 u - $126 |
1 u + $126 |
| Change |
+ $126 |
- $126 |
| After |
3 u |
1 u |
Tom had $132 more than Elijah at first. If Elijah had another $132 at first, both of them would had the same amount of money.
3 u - 126 = 1 u + 126 + 132
3 u - 126 = 1 u + 258
3 u - 1 u = 126 + 258
2 u = 384
1 u = 384 ÷ 2 = 192
Amount that Tom had at first
= 3 u - 126
= 3 x 192 - 126
= 576 - 126
= $450
Answer(s): $450
