The ratio of persimmons to mangosteens is 2 : 7. If 6 mangosteens are added, the ratio of persimmons to mangosteens will be 2 : 9. How many less persimmons than mangosteens are there in the end?
| |
Persimmons |
Mangosteens |
| Before |
2 u |
7 u |
| Change |
|
+ 6 |
| After |
2 u |
9 u |
The number of persimmons at first and in the end remains unchanged.
Number of mangosteens added
= 9 u - 7 u
= 2 u
2 u = 6
1 u = 6 ÷ 2 = 3
Number of less persimmons than mangosteens in the end
= 9 u - 2 u
= 7 u
= 7 x 3
= 21
Answer(s): 21
