The ratio of starfruits to mangoes is 3 : 4. If 27 mangoes are added, the ratio of starfruits to mangoes will be 3 : 7. How many more mangoes than starfruits are there in the end?
| |
Starfruits |
Mangoes |
| Before |
3 u |
4 u |
| Change |
|
+ 27 |
| After |
3 u |
7 u |
The number of starfruits at first and in the end remains unchanged.
Number of mangoes added
= 7 u - 4 u
= 3 u
3 u = 27
1 u = 27 ÷ 3 = 9
Number of more mangoes than starfruits in the end
= 7 u - 3 u
= 4 u
= 4 x 9
= 36
Answer(s): 36
