# Finite math help?

finite math help??

Just need a clue of how to start this problem (kinda confused with the ratios)
I know what the answer is, (from back of book)just need to know how to set it up in order to do other problems??
**Each ounce of substance A supplies 5% of the nutrition a patient needs. Substance B supplies 12% of the required nutrition per ounce. If digestive restrictions require that the ratio of substance A to Substance B be 3/5, how many ounces of each should be in the diet to provide 100% of the required nutrition??**

thanks for any help!!??

arildno
Homework Helper
Gold Member
Dearly Missed
Welcome to PF!
Try set up a system of equations:
Let "x" be the number of ounces of "A", "y" the number of ounces of B.
What relations between "x" and "y" have you been given?

I understand how to do the equation type problems, but this one just didn;t make sense to me, cause that's all the information it gives and i seems like it isn't enough or you have to do something with the 3/5 ration btw A and B and I don't understand how to do that??

shmoe