Yen had
49 as much money as Tina. Yen received another $33 from her mother and Tina received $9 from her aunt. In the end, Yen had $9 more than Tina. How much did the girls have altogether in the end?
| |
Yen |
Tina |
| Before |
4 u |
9 u |
| Change |
+ 33 |
+ 9 |
| After |
4 u + 33 |
9 u + 9 |
If Tina received another $9 in the end, she would have the same amount of money as Yen.
9 u + 9 + 9 = 4 u + 33
9 u + 18 = 4 u + 33
9 u - 4 u = 33 - 18
5 u = 15
1 u = 15 ÷ 5 = 3
Amount that the girls had in the end
= 4 u + 33 + 9 u + 9
= 4 u + 9 u + 33 + 9
= 13 u + 42
= 13 x 3 + 42
= $81
Answer(s): $81
