Dana had an equal number of peaches and mangosteens at first. She sold one-quarter of the mangosteens and bought another 35 peaches. In the end, she had thrice as many peaches as mangosteens. Find the number of mangosteens she had at first.
| |
Mangosteens |
Peaches |
| Before |
4 u |
9 u - 35 |
| Change |
- 1 u |
+ 35 |
| After |
3 u |
9 u |
The number of peaches and mangosteens at first is the same.
9 u - 35 = 4 u
9 u - 4 u = 35
5 u = 35
1 u = 35 ÷ 5 = 7
Number of mangosteens that she had at first
= 4 u
= 4 x 7
= 28
Answer(s): 28
