Opal had
310 as much money as Jean. Opal received another $47 from her father and Jean spent $9 on some files. In the end, Opal and Jean had an equal amount of money. How much money did the girls have altogether in the end?
| |
Opal |
Jean |
Total |
| Before |
3 u |
10 u |
|
| Change |
+ $47 |
- $9 |
|
| After |
3 u + $47 |
10 u - $9 |
13 u + $38 |
Amount of money Opal and Jean has is the same in the end.
10 u - 9 = 3 u + 47
10 u - 3 u = 47 + 9
7 u = 56
1 u = 56 ÷ 7 = 8
Amount the girls have in the end
= 3 u + 47 + 10 u - 9
= 13 u + 38
= 13 x 8 + 38
= 104 + 38
= $142
Answer(s): $142
