Warren and Ken had $1272. Warren spent
59 of his money on a computer. Ken spent
15 of his money on a laptop. The computer cost $140 more than the laptop. How much money had Warren left?
| |
Warren |
Ken |
Total |
Before |
9 u |
+ 252 |
5x5 =
25 u |
1272 |
Change |
- 5 u |
- 140 |
- 1x5 =
- 5 u |
|
Comparing the computer
and the laptop |
140 more |
|
|
After |
4 u |
+ 112 |
4x5 =
20 u |
|
140 ÷ 5 = 28
4 x 28 = 112
9 x 28 = 252
Total amount that Warren and Ken had at first
= 9 u + 252 + 25 u
= 34 u + 252
34 u + 252 = 1272
34 u = 1272 - 252
34 u = 1020
1 u = 1020 ÷ 34 = 30
Amount that Warren had left
= 4 u + 112
= 4 x 30 + 112
= 120 + 112
= $232
Answer(s): $232
