Elijah and Carl had $2220. Elijah spent
59 of his money on a washing machine. Carl spent
17 of his money on a computer. The washing machine cost $280 more than the computer. How much money had Elijah left?
|
Elijah |
Carl |
Total |
Before |
9 u |
+ 504 |
7x5 = 35 u |
2220 |
Change |
- 5 u |
- 280 |
- 1x5 = - 5 u |
|
Comparing the washing machine and the computer |
280 more |
|
|
After |
4 u |
+ 224 |
6x5 = 30 u |
|
280 ÷ 5 = 56
4 x 56 = 224
9 x 56 = 504
Total amount that Elijah and Carl had at first
= 9 u + 504 + 35 u
= 44 u + 504
44 u + 504 = 2220
44 u = 2220 - 504
44 u = 1716
1 u = 1716 ÷ 44 = 39
Amount that Elijah had left
= 4 u + 224
= 4 x 39 + 224
= 156 + 224
= $380
Answer(s): $380