Bobby and Lee had $2104. Bobby spent
58 of his money on a computer. Lee spent
18 of his money on a laptop. The computer cost $175 more than the laptop. How much money had Bobby left?
| |
Bobby |
Lee |
Total |
Before |
8 u |
+ 280 |
8x5 =
40 u |
2104 |
Change |
- 5 u |
- 175 |
- 1x5 =
- 5 u |
|
Comparing the computer
and the laptop |
175 more |
|
|
After |
3 u |
+ 105 |
7x5 =
35 u |
|
175 ÷ 5 = 35
3 x 35 = 105
8 x 35 = 280
Total amount that Bobby and Lee had at first
= 8 u + 280 + 40 u
= 48 u + 280
48 u + 280 = 2104
48 u = 2104 - 280
48 u = 1824
1 u = 1824 ÷ 48 = 38
Amount that Bobby had left
= 3 u + 105
= 3 x 38 + 105
= 114 + 105
= $219
Answer(s): $219
