Jeremy and Seth had $872. Jeremy spent
25 of his money on a computer. Seth spent
14 of his money on a home theater system. The computer cost $172 more than the home theater system. How much money had Jeremy left?
| |
Jeremy |
Seth |
Total |
Before |
5 u |
+ 430 |
4x2 =
8 u |
872 |
Change |
- 2 u |
- 172 |
- 1x2 =
- 2 u |
|
Comparing the computer
and the home theater system |
172 more |
|
|
After |
3 u |
+ 258 |
3x2 =
6 u |
|
172 ÷ 2 = 86
3 x 86 = 258
5 x 86 = 430
Total amount that Jeremy and Seth had at first
= 5 u + 430 + 8 u
= 13 u + 430
13 u + 430 = 872
13 u = 872 - 430
13 u = 442
1 u = 442 ÷ 13 = 34
Amount that Jeremy had left
= 3 u + 258
= 3 x 34 + 258
= 102 + 258
= $360
Answer(s): $360
