Betty had
79 as much money as Jen. Betty received another $33 from her aunt and Jen received $6 from her uncle. In the end, Betty had $9 more than Jen. How much did the girls have altogether in the end?
| |
Betty |
Jen |
| Before |
7 u |
9 u |
| Change |
+ 33 |
+ 6 |
| After |
7 u + 33 |
9 u + 6 |
If Jen received another $9 in the end, she would have the same amount of money as Betty.
9 u + 6 + 9 = 7 u + 33
9 u + 15 = 7 u + 33
9 u - 7 u = 33 - 15
2 u = 18
1 u = 18 ÷ 2 = 9
Amount that the girls had in the end
= 7 u + 33 + 9 u + 6
= 7 u + 9 u + 33 + 6
= 16 u + 39
= 16 x 9 + 39
= $183
Answer(s): $183
