Cody and Glen had $807. Cody spent
49 of his money on a home theater system. Glen spent
13 of his money on a refrigerator. The home theater system cost $144 more than the refrigerator. How much money did Cody have at first?
|
Cody |
Glen |
Total |
Before |
9 u |
+ 324 |
3x4 = 12 u |
807 |
Change |
- 4 u |
- 144 |
- 1x4 = - 4 u |
|
Comparing the home theater system and the refrigerator |
144 more |
|
|
After |
5 u |
+ 180 |
2x4 = 8 u |
|
144 ÷ 4 = 36
5 x 36 = 180
9 x 36 = 324
Total amount that Cody and Glen had at first
= 9 u + 324 + 12 u
= 21 u + 324
21 u + 324 = 807
21 u = 807 - 324
21 u = 483
1 u = 483 ÷ 21 = 23
Amount that Cody had at first
= 9 u + 324
= 9 x 23 + 324
= 207 + 324
= $531
Answer(s): $531