In a box, there are some oranges and pomegranates. If 28 more pomegranates are put into the box, the percentage of oranges will decrease from 75% to 40%. How many oranges are there in the box?
|
Oranges |
Pomegranates |
Before |
3x2 = 6 u |
1x2 = 2 u |
Change |
No change |
+ 28 |
After |
2x3 = 6 u |
3x3 = 9 u |
75% =
75100 =
34 40% =
40100 =
25 The number of oranges remains unchanged at first and in the end. Make the number of oranges the same. LCM of 3 and 2 is 6.
Number of pomegranates added
= 9 u - 2 u
= 7 u
7 u = 28
1 u = 28 ÷ 7 = 4
Number of oranges
= 6 u
= 6 x 4
= 24
Answer(s): 24