In a box, there are some oranges and persimmons. If 150 persimmons are removed from the box, the percentage of persimmons will increase from 30% to 80%. How many persimmons are there in the box?
|
Oranges |
Persimmons |
Before |
3x4 = 12 u |
7x4 = 28 u |
Change |
No change |
- 150 |
After |
4x3 = 12 u |
1x3 = 3 u |
30% =
30100 =
310 80% =
80100 =
45 The number of oranges remains unchanged at first and in the end. Make the number of oranges the same. LCM of 4 and 3 is 12.
Number of persimmons removed
= 28 u - 3 u
= 25 u
25 u = 150
1 u = 150 ÷ 25 = 6
Number of persimmons
= 28 u
= 28 x 6
= 168
Answer(s): 168