Tammy had
911 as much money as Jade. Tammy received another $50 from her aunt and Jade received $7 from her father. In the end, Tammy had $7 more than Jade. How much did the girls have altogether in the end?
| |
Tammy |
Jade |
| Before |
9 u |
11 u |
| Change |
+ 50 |
+ 7 |
| After |
9 u + 50 |
11 u + 7 |
If Jade received another $7 in the end, she would have the same amount of money as Tammy.
11 u + 7 + 7 = 9 u + 50
11 u + 14 = 9 u + 50
11 u - 9 u = 50 - 14
2 u = 36
1 u = 36 ÷ 2 = 18
Amount that the girls had in the end
= 9 u + 50 + 11 u + 7
= 9 u + 11 u + 50 + 7
= 20 u + 57
= 20 x 18 + 57
= $417
Answer(s): $417
