A sporting goods store has added a section with trail foods and snacks. Raisins cost $5.00 per pound and peanuts cost $3.80 per pound. Raisins and peanuts are going to be sold in a mixture of 30 pounds which will cost $4.05 per pound? How many pounds of raisins will be in the mix?

Question

anonymous · Answer

Ultimately you will have a certain amount of raisins and peanuts that will add up to 30 lbs. Using this you can write your first equation.
 r+p=30
 
Now you know that mixing a certain amount of raisins and peanuts at their specified price will cost you $4.05. This leads to your second equation.
 
5.00(r) + 3.80(p) = 4.05
 
You have two equations with two variables now. Solve the first for one variable
 
r = 30 - p
 plug into second equation
 
5.00(30 - p) + 3.80(p) = 4.05
 Solve for p and you should be able to do the rest.

anonymous · Answer

do you get it?