Natalie had
35 as much money as Cindy. Natalie received another $31 from her father and Cindy spent $9 on some files. In the end, Natalie and Cindy had an equal amount of money. How much money did the girls have altogether in the end?
|
Natalie |
Cindy |
Total |
Before |
3 u |
5 u |
|
Change |
+ $31 |
- $9 |
|
After |
3 u + $31 |
5 u - $9 |
8 u + $22 |
Amount of money Natalie and Cindy has is the same in the end.
5 u - 9 = 3 u + 31
5 u - 3 u = 31 + 9
2 u = 40
1 u = 40 ÷ 2 = 20
Amount the girls have in the end
= 3 u + 31 + 5 u - 9
= 8 u + 22
= 8 x 20 + 22
= 160 + 22
= $182
Answer(s): $182