Ivan and Ethan had $1284. Ivan spent
35 of his money on a portable air-conditioner. Ethan spent
18 of his money on a refrigerator. The portable air-conditioner cost $144 more than the refrigerator. How much money had Ivan left?
| |
Ivan |
Ethan |
Total |
Before |
5 u |
+ 240 |
8x3 =
24 u |
1284 |
Change |
- 3 u |
- 144 |
- 1x3 =
- 3 u |
|
Comparing the portable air-conditioner
and the refrigerator |
144 more |
|
|
After |
2 u |
+ 96 |
7x3 =
21 u |
|
144 ÷ 3 = 48
2 x 48 = 96
5 x 48 = 240
Total amount that Ivan and Ethan had at first
= 5 u + 240 + 24 u
= 29 u + 240
29 u + 240 = 1284
29 u = 1284 - 240
29 u = 1044
1 u = 1044 ÷ 29 = 36
Amount that Ivan had left
= 2 u + 96
= 2 x 36 + 96
= 72 + 96
= $168
Answer(s): $168
