The ratio of lemons to starfruits is 3 : 8. If 40 starfruits are added, the ratio of lemons to starfruits will be 3 : 13. How many more starfruits than lemons are there in the end?
| |
Lemons |
Starfruits |
| Before |
3 u |
8 u |
| Change |
|
+ 40 |
| After |
3 u |
13 u |
The number of lemons at first and in the end remains unchanged.
Number of starfruits added
= 13 u - 8 u
= 5 u
5 u = 40
1 u = 40 ÷ 5 = 8
Number of more starfruits than lemons in the end
= 13 u - 3 u
= 10 u
= 10 x 8
= 80
Answer(s): 80
