Oliver and Luke had $1677. Oliver spent
49 of his money on a portable air-conditioner. Luke spent
16 of his money on a refrigerator. The portable air-conditioner cost $188 more than the refrigerator. How much money had Oliver left?
|
Oliver |
Luke |
Total |
Before |
9 u |
+ 423 |
6x4 = 24 u |
1677 |
Change |
- 4 u |
- 188 |
- 1x4 = - 4 u |
|
Comparing the portable air-conditioner and the refrigerator |
188 more |
|
|
After |
5 u |
+ 235 |
5x4 = 20 u |
|
188 ÷ 4 = 47
5 x 47 = 235
9 x 47 = 423
Total amount that Oliver and Luke had at first
= 9 u + 423 + 24 u
= 33 u + 423
33 u + 423 = 1677
33 u = 1677 - 423
33 u = 1254
1 u = 1254 ÷ 33 = 38
Amount that Oliver had left
= 5 u + 235
= 5 x 38 + 235
= 190 + 235
= $425
Answer(s): $425