In a box, there are some mangosteens and pomegranates. If 90 pomegranates are removed from the box, the percentage of pomegranates will increase from 40% to 70%. How many pomegranates are there in the box?
|
Mangosteens |
Pomegranates |
Before |
2x7 = 14 u |
3x7 = 21 u |
Change |
No change |
- 90 |
After |
7x2 = 14 u |
3x2 = 6 u |
40% =
40100 =
25 70% =
70100 =
710 The number of mangosteens remains unchanged at first and in the end. Make the number of mangosteens the same. LCM of 7 and 2 is 14.
Number of pomegranates removed
= 21 u - 6 u
= 15 u
15 u = 90
1 u = 90 ÷ 15 = 6
Number of pomegranates
= 21 u
= 21 x 6
= 126
Answer(s): 126