Ahmad had $30 more than Jean. After Jean spent
15 of her money, Ahmad had twice as much money as Jean. How much money did Ahmad have at first?
| |
Ahmad |
Jean |
| Before |
8 u |
5 u |
| Change |
|
- 1 u |
| After |
8 u |
4 u |
Amount that Ahmad had in the end
= 2 x 4 u
= 8 u
If Jean had another $30 at first, the amounts that Ahmad and Jean each had at first will be the same.
8 u = 5 u + 30
8 u - 5 u = 30
3 u = 30
1 u = 30 ÷ 3 = 10
Amount Ahmad had at first
= 8 u
= 8 x 10
= $80
Answer(s): $80
