Albert and Cody had $1113. Albert spent
35 of his money on a computer. Cody spent
17 of his money on a laptop. The computer cost $231 more than the laptop. How much money had Albert left?
| |
Albert |
Cody |
Total |
Before |
5 u |
+ 385 |
7x3 =
21 u |
1113 |
Change |
- 3 u |
- 231 |
- 1x3 =
- 3 u |
|
Comparing the computer
and the laptop |
231 more |
|
|
After |
2 u |
+ 154 |
6x3 =
18 u |
|
231 ÷ 3 = 77
2 x 77 = 154
5 x 77 = 385
Total amount that Albert and Cody had at first
= 5 u + 385 + 21 u
= 26 u + 385
26 u + 385 = 1113
26 u = 1113 - 385
26 u = 728
1 u = 728 ÷ 26 = 28
Amount that Albert had left
= 2 u + 154
= 2 x 28 + 154
= 56 + 154
= $210
Answer(s): $210
