Eva had 8 more biscuits than Pamela at first. After Eva ate 5 biscuits, she had four times as many biscuits as Pamela in the end. How many biscuits did Pamela have?
| |
Pamela |
Eva |
| Before |
1 u |
1 u + 8 |
| Change |
|
- 5 |
| After |
1 u |
1 u + 3 |
Comparing Pamela
and Eva in the end |
1 u |
4 u |
The number of biscuits that Pamela had remains unchanged.
Number of biscuits that Eva had in the end
= 4 x 1 u
= 4 u
4 u = 1 u + 3
4 u - 1 u = 3
3 u = 3
1 u = 3 ÷ 3 = 1
Number of biscuits that Pamela had
= 1 u
= 1
Answer(s): 1
