The ratio of grapefruits to pears is 5 : 7. If 14 pears are added, the ratio of grapefruits to pears will be 5 : 9. How many more pears than grapefruits are there in the end?
| |
Grapefruits |
Pears |
| Before |
5 u |
7 u |
| Change |
|
+ 14 |
| After |
5 u |
9 u |
The number of grapefruits at first and in the end remains unchanged.
Number of pears added
= 9 u - 7 u
= 2 u
2 u = 14
1 u = 14 ÷ 2 = 7
Number of more pears than grapefruits in the end
= 9 u - 5 u
= 4 u
= 4 x 7
= 28
Answer(s): 28
