Question 87629
 one yard = 36 inches

We can use ratio and proportion here

Let the cost of 63 inches of ribbon be x cents

{{{x/63 = 12/36}}} because one yard = 36 inches

Now cross multiply

36x = 12 x 63

36x = 756

Now divide both sides by 36

x = 21 cents

x = $ 0.21

Answer is B