Will had
710 as many stamps as Irene. After Will gave away 35 stamps, he had 83 less stamps than Irene. How many stamps did Irene have?
| |
Will |
Irene |
| Before |
7 u |
10 u |
| Change |
- 35 |
|
| After |
7 u - 35 |
10 u |
Irene had 83 more stamps than Will in the end. So, if Will had another 83 stamps, he would have the same number of stamps as Irene.
10 u = 7 u - 35 + 83
10 u - 7 u = 83 - 35
3 u = 48
1 u = 48 ÷ 3 = 16
Number of stamps that Irene had at first
= 10 u
= 10 x 16
= 160
Answer: 160
