Answer:
a. 1/4
Explanation:
3r=12p
Divide the left side by 12 to get 1 cup of pineapple juice.
3r=12p
---- = p
12
So now you have
3r=p
BUT you have to divide BOTH sides by 12 so
3r=p
---
12
NOW you have
3/12 r = p
Simplify.
1/4r = p
So 1 cup of pineapple juice is equivalent to a quarter cup of orange juice!