SOLUTION: Mary purchased 4 lbs. of mixed nuts at 20 php per lb., Rita purchased 2 lbs. of peanuts at 15 php per lb. What is the average price per pound for the mixture of both purchases?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Mary purchased 4 lbs. of mixed nuts at 20 php per lb., Rita purchased 2 lbs. of peanuts at 15 php per lb. What is the average price per pound for the mixture of both purchases?      Log On


   

Question 987305: Mary purchased 4 lbs. of mixed nuts at 20 php per lb., Rita purchased 2 lbs. of peanuts at 15 php per lb. What is the average price per pound for the mixture of both purchases?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
.
x=average price per pound
.
4lbs(20php/lb)+2lbs(15php/lb)=6lbs(x)
80php+30php=6lbs(x)
110php=6lbs(x)
110php/6lbs=x
18.33php/lb=x
.
ANSWER The average price for the mixture is 18.33 php.