Bobby and Fred had $908. Bobby spent
35 of his money on a portable air-conditioner. Fred spent
16 of his money on a dishwasher. The portable air-conditioner cost $255 more than the dishwasher. How much money did Bobby have at first?
| |
Bobby |
Fred |
Total |
Before |
5 u |
+ 425 |
6x3 =
18 u |
908 |
Change |
- 3 u |
- 255 |
- 1x3 =
- 3 u |
|
Comparing the portable air-conditioner
and the dishwasher |
255 more |
|
|
After |
2 u |
+ 170 |
5x3 =
15 u |
|
255 ÷ 3 = 85
2 x 85 = 170
5 x 85 = 425
Total amount that Bobby and Fred had at first
= 5 u + 425 + 18 u
= 23 u + 425
23 u + 425 = 908
23 u = 908 - 425
23 u = 483
1 u = 483 ÷ 23 = 21
Amount that Bobby had at first
= 5 u + 425
= 5 x 21 + 425
= 105 + 425
= $530
Answer(s): $530
