Barbara had
15 as much money as Yoko. Barbara received another $29 from her father and Yoko spent $7 on some pens. In the end, Barbara and Yoko had an equal amount of money. How much money did the girls have altogether in the end?
|
Barbara |
Yoko |
Total |
Before |
1 u |
5 u |
|
Change |
+ $29 |
- $7 |
|
After |
1 u + $29 |
5 u - $7 |
6 u + $22 |
Amount of money Barbara and Yoko has is the same in the end.
5 u - 7 = 1 u + 29
5 u - 1 u = 29 + 7
4 u = 36
1 u = 36 ÷ 4 = 9
Amount the girls have in the end
= 1 u + 29 + 5 u - 7
= 6 u + 22
= 6 x 9 + 22
= 54 + 22
= $76
Answer(s): $76