Pamela had 12 more shortbreads than Elyse at first. After Pamela ate 3 shortbreads, she had four times as many shortbreads as Elyse in the end. How many shortbreads did Elyse have?
| |
Elyse |
Pamela |
| Before |
1 u |
1 u + 12 |
| Change |
|
- 3 |
| After |
1 u |
1 u + 9 |
Comparing Elyse
and Pamela in the end |
1 u |
4 u |
The number of shortbreads that Elyse had remains unchanged.
Number of shortbreads that Pamela had in the end
= 4 x 1 u
= 4 u
4 u = 1 u + 9
4 u - 1 u = 9
3 u = 9
1 u = 9 ÷ 3 = 3
Number of shortbreads that Elyse had
= 1 u
= 3
Answer(s): 3
