Tom and Carl had $800. Tom spent
25 of his money on a refrigerator. Carl spent
15 of his money on a dishwasher. The refrigerator cost $194 more than the dishwasher. How much money did Tom have at first?
| |
Tom |
Carl |
Total |
Before |
5 u |
+ 485 |
5x2 =
10 u |
800 |
Change |
- 2 u |
- 194 |
- 1x2 =
- 2 u |
|
Comparing the refrigerator
and the dishwasher |
194 more |
|
|
After |
3 u |
+ 291 |
4x2 =
8 u |
|
194 ÷ 2 = 97
3 x 97 = 291
5 x 97 = 485
Total amount that Tom and Carl had at first
= 5 u + 485 + 10 u
= 15 u + 485
15 u + 485 = 800
15 u = 800 - 485
15 u = 315
1 u = 315 ÷ 15 = 21
Amount that Tom had at first
= 5 u + 485
= 5 x 21 + 485
= 105 + 485
= $590
Answer(s): $590
