Winnie had an equal number of mangosteens and grapefruits at first. She sold half of the grapefruits and bought another 24 mangosteens. In the end, she had four times as many mangosteens as grapefruits. Find the number of grapefruits she had at first.
| |
Mangosteens |
Grapefruits |
| Before |
4 u - 24 |
2 u |
| Change |
+ 24 |
- 1 u |
| After |
4 u |
1 u |
The number of mangosteens and grapefruits at first is the same.
4 u - 24 = 2 u
4 u - 2 u = 24
2 u = 24
1 u = 24 ÷ 2 = 12
Number of grapefruits that Winnie had at first
= 2 u
= 2 x 12
= 24
Answer(s): 24
