Cindy had an equal number of persimmons and pears at first. She sold one-third of the pears and bought another 15 persimmons. In the end, she had thrice as many persimmons as pears. Find the number of pears she had at first.
| |
Persimmons |
Pears |
| Before |
6 u - 15 |
3 u |
| Change |
+ 15 |
- 1 u |
| After |
6 u |
2 u |
The number of persimmons and pears at first is the same.
6 u - 15 = 3 u
6 u - 3 u = 15
3 u = 15
1 u = 15 ÷ 3 = 5
Number of pears that Cindy had at first
= 3 u
= 3 x 5
= 15
Answer(s): 15
