John and Billy had $1156. John spent
35 of his money on a computer. Billy spent
18 of his money on a refrigerator. The computer cost $189 more than the refrigerator. How much money did John have at first?
| |
John |
Billy |
Total |
Before |
5 u |
+ 315 |
8x3 =
24 u |
1156 |
Change |
- 3 u |
- 189 |
- 1x3 =
- 3 u |
|
Comparing the computer
and the refrigerator |
189 more |
|
|
After |
2 u |
+ 126 |
7x3 =
21 u |
|
189 ÷ 3 = 63
2 x 63 = 126
5 x 63 = 315
Total amount that John and Billy had at first
= 5 u + 315 + 24 u
= 29 u + 315
29 u + 315 = 1156
29 u = 1156 - 315
29 u = 841
1 u = 841 ÷ 29 = 29
Amount that John had at first
= 5 u + 315
= 5 x 29 + 315
= 145 + 315
= $460
Answer(s): $460
