David and Ivan had $769. David spent
25 of his money on a refrigerator. Ivan spent
13 of his money on a television. The refrigerator cost $202 more than the television. How much money had David left?
|
David |
Ivan |
Total |
Before |
5 u |
+ 505 |
3x2 = 6 u |
769 |
Change |
- 2 u |
- 202 |
- 1x2 = - 2 u |
|
Comparing the refrigerator and the television |
202 more |
|
|
After |
3 u |
+ 303 |
2x2 = 4 u |
|
202 ÷ 2 = 101
3 x 101 = 303
5 x 101 = 505
Total amount that David and Ivan had at first
= 5 u + 505 + 6 u
= 11 u + 505
11 u + 505 = 769
11 u = 769 - 505
11 u = 264
1 u = 264 ÷ 11 = 24
Amount that David had left
= 3 u + 303
= 3 x 24 + 303
= 72 + 303
= $375
Answer(s): $375