Sofia and Evelyn had an equal number of lollipops at first. After Sofia bought another 6 lollipops and Evelyn lost 21 lollipops, Sofia had four times as many lollipops as Evelyn. Find the number of lollipops each of them had at first.
| |
Sofia |
Evelyn |
| Before |
4 u - 6 |
1 u + 21 |
| Change |
+ 6 |
- 21 |
| After |
4 u |
1 u |
The number of lollipops that Sofia and Evelyn at first is the same.
4 u - 6 = 1 u + 21
4 u - 1 u = 21 + 6
3 u = 27
1 u = 27 ÷ 3 = 9
Number of lollipops that each of them had at first
= 1 u + 21
= 9 + 21
= 30
Answer(s): 30
