Answer:
a=0
b=6
c=12
Explanation:
4:24 is one of the ratios
lets use that as an example
divide both sides by 4 and you get
1:6
now lets use 3:18
divide both sides by 3 and you get
1:6
Now if you have 0 apples you have 0 slices
if you have one apple you get 6 slices...
because of the ratio 1:6 one apple=6 slices
now if you have 2 apples you have to times 1:6 by 2 which gives us 2:12 meaning you get 12 slices