weighted averages
posted by Em .
How do you do this?
a pineapple drink contains 15% pineapple juice. how much pure pineapple juice should be added to 8 quarts of the drink to obtain a mixture containing 50% pineapple juice?
Let X be the amount of pure pineapple that you must add, in quarts. The amount of pure pineapple in the mix will be
(0.15)*8 + X
This must equal the amount of water (or nonpineapple ingredients), which is 0.85*8.
1.2 X = 6.8
Solve for X
Caleb has 1 liter of a mixture containing 42% boric acid. How much water must be added to make the mixture 6% boric acid?
Respond to this Question
Similar Questions

2 algebra questions
how do u find the lest common multiple 4a^2c & 14abc^5 and what decimal part of 40 is 102? 
Math
An advertisement for a pineapple drink claims that the drink contains 15%pineapple juice. How much pure pineapple juice would have to be added to 8 quarts of the drink to obtain a mixture containing 50% pineapple juice? 
Math
An advertisement for a pineapple drink claims that the drink contains 15%pineapple juice. How much pure pineapple juice would have to be added to 8 quarts of the drink to obtain a mixture containing 50% pineapple juice? 
Algebra 1 honors
A pineapple drink contains 15% pineapple juice. How much pure pineapple juice should be added to 8 quarts of the drink to obtain a mixture containing 50% pineapple juice. 
algebra
how many quarts of pineapple juice should Theo add to a 20% pineapple drink to create 5 quarts of a 50% pineapple juice mixture? 
math
Charles mixed pineapple juice and orange juice to make a fruit punch. He made a total of 5 1/2 cups of the mixture and used 2 more cups of orange juice than pineapple juice. How much did he use of each type of juice? 
college math HELP!!!!!
CalJuice Company has decided to introduce three fruit juices made from blending two or more concentrates. These juices will be packaged in 2qt (64oz) cartons. One carton of pineappleorange juice requires 8 oz each of pineapple and … 
college math
CalJuice Company has decided to introduce three fruit juices made from blending two or more concentrates. These juices will be packaged in 2qt (64oz) cartons. One carton of pineappleorange juice requires 8 oz each of pineapple and … 
General Math
This is something about rational functions and I was given an assignment to be answered: Liway has 6 liters of a pineapple juice blend. What is 50% pure pineapple juice. How many liters of pure pineapple juice and to be added to make … 
Math
cindy is making a fruit juice drink . the recipe calls for 5 parts apple juice and 3 parts pineapple juice. cindy puts 2 1/2 cups of apple juice into a pitcher .cindy wants the juice drink in her pitcher to taste the same as the drink …