A box containing a dozen apples is opened and a few of the apples are found to be rotten. Which of the following may be the ratio of fresh apples to rotten apples?
A
4:7
B
3:1
C
5:3
D
3:2
Correct Option - B
Explaination
Let X and Y be the number of fresh apples and rotten apples.
X+Y=12
Ratio = X:Y
If the ratio simplifies to a:b,
a+b has to be a factor of 12.
3+1=4 is a factor of 12. Hence (B) can be the ratio.