Ethan had $35.70 more than Tommy. After Tommy had spent
67 of his money, Ethan had $141.90 more than Tommy. How much money did Ethan have at first?
|
Ethan |
Tommy |
More |
Before |
7 u + $35.70 |
7 u |
$35.70 |
Change |
|
- 6 u |
|
After |
7 u + $35.70 |
1 u |
6 u + $35.70 |
Ethan had $141.90 more than Tommy in the end.
7 u + 35.70 - 1 u = 141.90
6 u + 35.70 = 141.90
6 u = 141.90 - 35.70
6 u = 106.20
1 u = 106.20 ÷ 6 = 17.70
Amount that Ethan had at first
= 7 u + 35.70
= 7 x 17.70 + 35.70
= 123.90 + 35.70
= $159.60
Answer(s): $159.60