Linda had
37 as much money as Gem. Linda received another $50 from her mother and Gem spent $10 on some staplers. In the end, Linda and Gem had an equal amount of money. How much money did the girls have altogether in the end?
|
Linda |
Gem |
Total |
Before |
3 u |
7 u |
|
Change |
+ $50 |
- $10 |
|
After |
3 u + $50 |
7 u - $10 |
10 u + $40 |
Amount of money Linda and Gem has is the same in the end.
7 u - 10 = 3 u + 50
7 u - 3 u = 50 + 10
4 u = 60
1 u = 60 ÷ 4 = 15
Amount the girls have in the end
= 3 u + 50 + 7 u - 10
= 10 u + 40
= 10 x 15 + 40
= 150 + 40
= $190
Answer(s): $190