Abi had
611 as much money as Sabrina. Abi received another $31 from her father and Sabrina received $7 from her aunt. In the end, Abi had $4 more than Sabrina. How much did the girls have altogether in the end?
| |
Abi |
Sabrina |
| Before |
6 u |
11 u |
| Change |
+ 31 |
+ 7 |
| After |
6 u + 31 |
11 u + 7 |
If Sabrina received another $4 in the end, she would have the same amount of money as Abi.
11 u + 7 + 4 = 6 u + 31
11 u + 11 = 6 u + 31
11 u - 6 u = 31 - 11
5 u = 20
1 u = 20 ÷ 5 = 4
Amount that the girls had in the end
= 6 u + 31 + 11 u + 7
= 6 u + 11 u + 31 + 7
= 17 u + 38
= 17 x 4 + 38
= $106
Answer(s): $106
