John and Liam had $1817. John spent
59 of his money on a computer. Liam spent
18 of his money on a notebook. The computer cost $220 more than the notebook. How much money had John left?
|
John |
Liam |
Total |
Before |
9 u |
+ 396 |
8x5 = 40 u |
1817 |
Change |
- 5 u |
- 220 |
- 1x5 = - 5 u |
|
Comparing the computer and the notebook |
220 more |
|
|
After |
4 u |
+ 176 |
7x5 = 35 u |
|
220 ÷ 5 = 44
4 x 44 = 176
9 x 44 = 396
Total amount that John and Liam had at first
= 9 u + 396 + 40 u
= 49 u + 396
49 u + 396 = 1817
49 u = 1817 - 396
49 u = 1421
1 u = 1421 ÷ 49 = 29
Amount that John had left
= 4 u + 176
= 4 x 29 + 176
= 116 + 176
= $292
Answer(s): $292