Cindy had
27 as much money as Kathy. Cindy received another $31 from her uncle and Kathy received $7 from her father. In the end, Cindy had $4 more than Kathy. How much did the girls have altogether in the end?
| |
Cindy |
Kathy |
| Before |
2 u |
7 u |
| Change |
+ 31 |
+ 7 |
| After |
2 u + 31 |
7 u + 7 |
If Kathy received another $4 in the end, she would have the same amount of money as Cindy.
7 u + 7 + 4 = 2 u + 31
7 u + 11 = 2 u + 31
7 u - 2 u = 31 - 11
5 u = 20
1 u = 20 ÷ 5 = 4
Amount that the girls had in the end
= 2 u + 31 + 7 u + 7
= 2 u + 7 u + 31 + 7
= 9 u + 38
= 9 x 4 + 38
= $74
Answer(s): $74
