Joelle had an equal number of grapefruits and lemons at first. She sold two-thirds of the lemons and bought another 50 grapefruits. In the end, she had five times as many grapefruits as lemons. Find the number of lemons she had at first.
| |
Lemons |
Grapefruits |
| Before |
3 u |
5 u - 50 |
| Change |
- 2 u |
+ 50 |
| After |
1 u |
5 u |
The number of grapefruits and lemons at first is the same.
5 u - 50 = 3 u
5 u - 3 u = 50
2 u = 50
1 u = 50 ÷ 2 = 25
Number of lemons that she had at first
= 3 u
= 3 x 25
= 75
Answer(s): 75
