Ben had $35 more than Diana. After Diana spent
15 of her money, Ben had thrice as much money as Diana. How much money did Ben have at first?
| |
Ben |
Diana |
| Before |
12 u |
5 u |
| Change |
|
- 1 u |
| After |
12 u |
4 u |
Amount that Ben had in the end
= 3 x 4 u
= 12 u
If Diana had another $35 at first, the amounts that Ben and Diana each had at first will be the same.
12 u = 5 u + 35
12 u - 5 u = 35
7 u = 35
1 u = 35 ÷ 7 = 5
Amount Ben had at first
= 12 u
= 12 x 5
= $60
Answer(s): $60
