In a box, there are some mangosteens and oranges. If 25 oranges are removed from the box, the percentage of oranges will increase from 30% to 60%. How many oranges are there in the box?
|
Mangosteens |
Oranges |
Before |
3x1 = 3 u |
7x1 = 7 u |
Change |
No change |
- 25 |
After |
3x1 = 3 u |
2x1 = 2 u |
30% =
30100 =
310 60% =
60100 =
35 The number of mangosteens remains unchanged at first and in the end. Make the number of mangosteens the same. LCM of 3 and 3 is 3.
Number of oranges removed
= 7 u - 2 u
= 5 u
5 u = 25
1 u = 25 ÷ 5 = 5
Number of oranges
= 7 u
= 7 x 5
= 35
Answer(s): 35