Joelle had
57 as much money as Usha. Joelle received another $31 from her mother and Usha received $7 from her father. In the end, Joelle had $2 more than Usha. How much did the girls have altogether in the end?
| |
Joelle |
Usha |
| Before |
5 u |
7 u |
| Change |
+ 31 |
+ 7 |
| After |
5 u + 31 |
7 u + 7 |
If Usha received another $2 in the end, she would have the same amount of money as Joelle.
7 u + 7 + 2 = 5 u + 31
7 u + 9 = 5 u + 31
7 u - 5 u = 31 - 9
2 u = 22
1 u = 22 ÷ 2 = 11
Amount that the girls had in the end
= 5 u + 31 + 7 u + 7
= 5 u + 7 u + 31 + 7
= 12 u + 38
= 12 x 11 + 38
= $170
Answer(s): $170
