Lynn had an equal number of starfruits and lemons at first. She sold one-third of the lemons and bought another 18 starfruits. In the end, she had six times as many starfruits as lemons. Find the number of lemons she had at first.
| |
Starfruits |
Lemons |
| Before |
12 u - 18 |
3 u |
| Change |
+ 18 |
- 1 u |
| After |
12 u |
2 u |
The number of starfruits and lemons at first is the same.
12 u - 18 = 3 u
12 u - 3 u = 18
9 u = 18
1 u = 18 ÷ 9 = 2
Number of lemons that Lynn had at first
= 3 u
= 3 x 2
= 6
Answer(s): 6
