Risa had
411 as much money as Olivia. Risa received another $34 from her uncle and Olivia received $7 from her father. In the end, Risa had $6 more than Olivia. How much did the girls have altogether in the end?
| |
Risa |
Olivia |
| Before |
4 u |
11 u |
| Change |
+ 34 |
+ 7 |
| After |
4 u + 34 |
11 u + 7 |
If Olivia received another $6 in the end, she would have the same amount of money as Risa.
11 u + 7 + 6 = 4 u + 34
11 u + 13 = 4 u + 34
11 u - 4 u = 34 - 13
7 u = 21
1 u = 21 ÷ 7 = 3
Amount that the girls had in the end
= 4 u + 34 + 11 u + 7
= 4 u + 11 u + 34 + 7
= 15 u + 41
= 15 x 3 + 41
= $86
Answer(s): $86
