Marion had an equal number of pears and mangosteens at first. She sold one-sixth of the mangosteens and bought another 27 pears. In the end, she had thrice as many pears as mangosteens. Find the number of mangosteens she had at first.
| |
Pears |
Mangosteens |
| Before |
15 u - 27 |
6 u |
| Change |
+ 27 |
- 1 u |
| After |
15 u |
5 u |
The number of pears and mangosteens at first is the same.
15 u - 27 = 6 u
15 u - 6 u = 27
9 u = 27
1 u = 27 ÷ 9 = 3
Number of mangosteens that Marion had at first
= 6 u
= 6 x 3
= 18
Answer(s): 18
