Henry had
710 as many stamps as Kylie. After Henry bought another 22 stamps, he had 11 less stamps than Kylie. How many stamps did Henry have at first?
| |
Henry |
Kylie |
| Before |
7 u |
10 u |
| Change |
+ 22 |
|
| After |
7 u + 22 |
10 u |
Kylie had 11 more stamps than Henry in the end. So, if Henry had another 11 stamps, he would have the same number of stamps as Kylie.
10 u = 7 u + 22 + 11
10 u - 7 u = 22 + 11
3 u = 33
1 u = 33 ÷ 3 = 11
Number of stamps that Henry had at first
= 7 u
= 7 x 11
= 77
Answer: 77
