The ratio of lemons to persimmons is 2 : 5. If 28 persimmons are added, the ratio of lemons to persimmons will be 2 : 9. How many less lemons than persimmons are there in the end?
| |
Lemons |
Persimmons |
| Before |
2 u |
5 u |
| Change |
|
+ 28 |
| After |
2 u |
9 u |
The number of lemons at first and in the end remains unchanged.
Number of persimmons added
= 9 u - 5 u
= 4 u
4 u = 28
1 u = 28 ÷ 4 = 7
Number of less lemons than persimmons in the end
= 9 u - 2 u
= 7 u
= 7 x 7
= 49
Answer(s): 49
