George and Tom had $800. George spent
35 of his money on a dishwasher. Tom spent
15 of his money on a notebook. The dishwasher cost $216 more than the notebook. How much money had George left?
| |
George |
Tom |
Total |
Before |
5 u |
+ 360 |
5x3 =
15 u |
800 |
Change |
- 3 u |
- 216 |
- 1x3 =
- 3 u |
|
Comparing the dishwasher
and the notebook |
216 more |
|
|
After |
2 u |
+ 144 |
4x3 =
12 u |
|
216 ÷ 3 = 72
2 x 72 = 144
5 x 72 = 360
Total amount that George and Tom had at first
= 5 u + 360 + 15 u
= 20 u + 360
20 u + 360 = 800
20 u = 800 - 360
20 u = 440
1 u = 440 ÷ 20 = 22
Amount that George had left
= 2 u + 144
= 2 x 22 + 144
= 44 + 144
= $188
Answer(s): $188
