Dana had
57 as much money as Yoko. Dana received another $42 from her mother and Yoko received $4 from her uncle. In the end, Dana had $4 more than Yoko. How much did the girls have altogether in the end?
| |
Dana |
Yoko |
| Before |
5 u |
7 u |
| Change |
+ 42 |
+ 4 |
| After |
5 u + 42 |
7 u + 4 |
If Yoko received another $4 in the end, she would have the same amount of money as Dana.
7 u + 4 + 4 = 5 u + 42
7 u + 8 = 5 u + 42
7 u - 5 u = 42 - 8
2 u = 34
1 u = 34 ÷ 2 = 17
Amount that the girls had in the end
= 5 u + 42 + 7 u + 4
= 5 u + 7 u + 42 + 4
= 12 u + 46
= 12 x 17 + 46
= $250
Answer(s): $250
