The ratio of starfruits to peaches is 2 : 5. If 40 peaches are added, the ratio of starfruits to peaches will be 2 : 9. How many more peaches than starfruits are there in the end?
| |
Starfruits |
Peaches |
| Before |
2 u |
5 u |
| Change |
|
+ 40 |
| After |
2 u |
9 u |
The number of starfruits at first and in the end remains unchanged.
Number of peaches added
= 9 u - 5 u
= 4 u
4 u = 40
1 u = 40 ÷ 4 = 10
Number of more peaches than starfruits in the end
= 9 u - 2 u
= 7 u
= 7 x 10
= 70
Answer(s): 70
