PSLE At first, Emily had 77 buttons and some stamps. After she gave away 47 buttons and 40% of the stamps, she had a total of 54 buttons and stamps. How many stamps did Emily have at first?
|
Buttons |
Stamps |
Total |
Before |
77 |
5 u |
|
Change |
- 47 |
- 2 u |
|
After |
30 |
3 u |
54 |
40% =
40100 =
25 Number of buttons that Emily left
= 77 - 47
= 30
Number of stamps that Emily left
= 54 - 30
= 24
3 u = 24
1 u = 24 ÷ 3 = 8
Number of stamps that Emily had at first
= 5 u
= 5 x 8
= 40
Answer(s): 40