Julian and Bobby had $1605. Julian spent
49 of his money on a refrigerator. Bobby spent
14 of his money on a home theater system. The refrigerator cost $280 more than the home theater system. How much money did Julian have at first?
|
Julian |
Bobby |
Total |
Before |
9 u |
+ 630 |
4x4 = 16 u |
1605 |
Change |
- 4 u |
- 280 |
- 1x4 = - 4 u |
|
Comparing the refrigerator and the home theater system |
280 more |
|
|
After |
5 u |
+ 350 |
3x4 = 12 u |
|
280 ÷ 4 = 70
5 x 70 = 350
9 x 70 = 630
Total amount that Julian and Bobby had at first
= 9 u + 630 + 16 u
= 25 u + 630
25 u + 630 = 1605
25 u = 1605 - 630
25 u = 975
1 u = 975 ÷ 25 = 39
Amount that Julian had at first
= 9 u + 630
= 9 x 39 + 630
= 351 + 630
= $981
Answer(s): $981