Tammy had an equal number of passion fruits and persimmons at first. She sold half of the persimmons and bought another 21 passion fruits. In the end, she had five times as many passion fruits as persimmons. Find the number of persimmons she had at first.
| |
Passion Fruits |
Persimmons |
| Before |
5 u - 21 |
2 u |
| Change |
+ 21 |
- 1 u |
| After |
5 u |
1 u |
The number of passion fruits and persimmons at first is the same.
5 u - 21 = 2 u
5 u - 2 u = 21
3 u = 21
1 u = 21 ÷ 3 = 7
Number of persimmons that Tammy had at first
= 2 u
= 2 x 7
= 14
Answer(s): 14
