Luke and Simon had $1900. Luke spent
59 of his money on a refrigerator. Simon spent
17 of his money on a washing machine. The refrigerator cost $200 more than the washing machine. How much money had Luke left?
| |
Luke |
Simon |
Total |
Before |
9 u |
+ 360 |
7x5 =
35 u |
1900 |
Change |
- 5 u |
- 200 |
- 1x5 =
- 5 u |
|
Comparing the refrigerator
and the washing machine |
200 more |
|
|
After |
4 u |
+ 160 |
6x5 =
30 u |
|
200 ÷ 5 = 40
4 x 40 = 160
9 x 40 = 360
Total amount that Luke and Simon had at first
= 9 u + 360 + 35 u
= 44 u + 360
44 u + 360 = 1900
44 u = 1900 - 360
44 u = 1540
1 u = 1540 ÷ 44 = 35
Amount that Luke had left
= 4 u + 160
= 4 x 35 + 160
= 140 + 160
= $300
Answer(s): $300
