John and Jenson had $1070. John spent
25 of his money on a portable air-conditioner. Jenson spent
16 of his money on a dishwasher. The portable air-conditioner cost $258 more than the dishwasher. How much money did John have at first?
| |
John |
Jenson |
Total |
Before |
5 u |
+ 645 |
6x2 =
12 u |
1070 |
Change |
- 2 u |
- 258 |
- 1x2 =
- 2 u |
|
Comparing the portable air-conditioner
and the dishwasher |
258 more |
|
|
After |
3 u |
+ 387 |
5x2 =
10 u |
|
258 ÷ 2 = 129
3 x 129 = 387
5 x 129 = 645
Total amount that John and Jenson had at first
= 5 u + 645 + 12 u
= 17 u + 645
17 u + 645 = 1070
17 u = 1070 - 645
17 u = 425
1 u = 425 ÷ 17 = 25
Amount that John had at first
= 5 u + 645
= 5 x 25 + 645
= 125 + 645
= $770
Answer(s): $770
