Xylia had an equal number of starfruits and persimmons at first. She sold one-third of the persimmons and bought another 30 starfruits. In the end, she had four times as many starfruits as persimmons. Find the number of persimmons she had at first.
| |
Starfruits |
Persimmons |
| Before |
8 u - 30 |
3 u |
| Change |
+ 30 |
- 1 u |
| After |
8 u |
2 u |
The number of starfruits and persimmons at first is the same.
8 u - 30 = 3 u
8 u - 3 u = 30
5 u = 30
1 u = 30 ÷ 5 = 6
Number of persimmons that Xylia had at first
= 3 u
= 3 x 6
= 18
Answer(s): 18
