The ratio of grapefruits to lemons is 2 : 5. If 10 lemons are added, the ratio of grapefruits to lemons will be 2 : 7. How many less grapefruits than lemons are there in the end?
| |
Grapefruits |
Lemons |
| Before |
2 u |
5 u |
| Change |
|
+ 10 |
| After |
2 u |
7 u |
The number of grapefruits at first and in the end remains unchanged.
Number of lemons added
= 7 u - 5 u
= 2 u
2 u = 10
1 u = 10 ÷ 2 = 5
Number of less grapefruits than lemons in the end
= 7 u - 2 u
= 5 u
= 5 x 5
= 25
Answer(s): 25
