Sean and Gabriel had $950. Sean spent
35 of his money on a home theater system. Gabriel spent
18 of his money on a computer. The home theater system cost $135 more than the computer. How much money had Sean left?
| |
Sean |
Gabriel |
Total |
Before |
5 u |
+ 225 |
8x3 =
24 u |
950 |
Change |
- 3 u |
- 135 |
- 1x3 =
- 3 u |
|
Comparing the home theater system
and the computer |
135 more |
|
|
After |
2 u |
+ 90 |
7x3 =
21 u |
|
135 ÷ 3 = 45
2 x 45 = 90
5 x 45 = 225
Total amount that Sean and Gabriel had at first
= 5 u + 225 + 24 u
= 29 u + 225
29 u + 225 = 950
29 u = 950 - 225
29 u = 725
1 u = 725 ÷ 29 = 25
Amount that Sean had left
= 2 u + 90
= 2 x 25 + 90
= 50 + 90
= $140
Answer(s): $140
