Ben had 10 times as much money as Peter. After Ben had spent half of his money, he had $28 more than Peter. How much money did Ben have at first?
| |
Ben |
Peter |
| Before |
10 u |
1 u |
| Change |
- 5 u |
|
| After |
5 u |
1 u |
Amount that Ben had after he spent half of his money
= 10 u ÷ 2
= 5 u
Amount that Ben had more than Peter in the end
= 5 u - 1 u
= 4 u
4 u = 28
1 u = 28 ÷ 4 = 7
Amount that Ben had at first
= 10 u
= 10 x 28
= $280
Answer(s): $280
