Simon had 10 times as much money as Ivan. After Simon had spent half of his money, he had $20 more than Ivan. How much money did Simon have at first?
| |
Simon |
Ivan |
| Before |
10 u |
1 u |
| Change |
- 5 u |
|
| After |
5 u |
1 u |
Amount that Simon had after he spent half of his money
= 10 u ÷ 2
= 5 u
Amount that Simon had more than Ivan in the end
= 5 u - 1 u
= 4 u
4 u = 20
1 u = 20 ÷ 4 = 5
Amount that Simon had at first
= 10 u
= 10 x 20
= $200
Answer(s): $200
