The ratio of starfruits to passion fruits is 2 : 5. If 20 passion fruits are added, the ratio of starfruits to passion fruits will be 2 : 9. How many less starfruits than passion fruits are there in the end?
| |
Starfruits |
Passion Fruits |
| Before |
2 u |
5 u |
| Change |
|
+ 20 |
| After |
2 u |
9 u |
The number of starfruits at first and in the end remains unchanged.
Number of passion fruits added
= 9 u - 5 u
= 4 u
4 u = 20
1 u = 20 ÷ 4 = 5
Number of less starfruits than passion fruits in the end
= 9 u - 2 u
= 7 u
= 7 x 5
= 35
Answer(s): 35
