Charlie had $42 more than Gillian. After Gillian spent
27 of her money, Charlie had twice as much money as Gillian. How much money did Charlie have at first?
| |
Charlie |
Gillian |
| Before |
10 u |
7 u |
| Change |
|
- 2 u |
| After |
10 u |
5 u |
Amount that Charlie had in the end
= 2 x 5 u
= 10 u
If Gillian had another $42 at first, the amounts that Charlie and Gillian each had at first will be the same.
10 u = 7 u + 42
10 u - 7 u = 42
3 u = 42
1 u = 42 ÷ 3 = 14
Amount Charlie had at first
= 10 u
= 10 x 14
= $140
Answer(s): $140
