Finite math help?

  • #1
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!!??
 

Answers and Replies

  • #2
arildno
Science Advisor
Homework Helper
Gold Member
Dearly Missed
9,970
132
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?
 
  • #3
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??
 
  • #4
shmoe
Science Advisor
Homework Helper
1,992
1
You should be able to get two equations out of the problem, one involving the total amount of nutrition consumed, the other involving the ratio bit you are having trouble with.

The ratio of substance A to substance B is the number of ounces of A divided by the number of ounces of B, e.g. if you had 10 ounces of A and 3 ounces of B this would be 10/3. The requirement that this ratio is 3/5 gives you your second equation.

Can you set up these two equations? What do you get?
 

Related Threads on Finite math help?

  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
0
Views
850
  • Last Post
Replies
4
Views
4K
  • Last Post
Replies
3
Views
3K
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
2
Views
4K
  • Last Post
Replies
0
Views
1K
  • Last Post
Replies
5
Views
2K
Top