Opal had
17 as much money as Abi. Opal received another $47 from her uncle and Abi spent $7 on some pencils. In the end, Opal and Abi had an equal amount of money. How much money did the girls have altogether in the end?
|
Opal |
Abi |
Total |
Before |
1 u |
7 u |
|
Change |
+ $47 |
- $7 |
|
After |
1 u + $47 |
7 u - $7 |
8 u + $40 |
Amount of money Opal and Abi has is the same in the end.
7 u - 7 = 1 u + 47
7 u - 1 u = 47 + 7
6 u = 54
1 u = 54 ÷ 6 = 9
Amount the girls have in the end
= 1 u + 47 + 7 u - 7
= 8 u + 40
= 8 x 9 + 40
= 72 + 40
= $112
Answer(s): $112