SOLUTION: Lisa needs 10 gallons of solution that is 60% chlorine for an experiment. She has a solution that is 90% chlorine and another that is 50% chlorine. How many gallons of each should

Question 905645: Lisa needs 10 gallons of solution that is 60% chlorine for an experiment. She has a solution that is 90% chlorine and another that is 50% chlorine. How many gallons of each should she use?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Do it like this one. Only the numbers are different.
-----------
Amanda wants to make 8 gal. of a 20% saline solution by mixing together a 56% saline solution and a 8% saline solution. How much of each solution must she use?
================
e = amount of 8%
f = amount of 56%
---
e+ f = 8 (total solution)
8e + 56f = 20*8 (total saline)
---
e+ f = 8
e + 7f = 20
------------ Subtract
-6f = -12
f = 2
e = 6
RELATED QUESTIONS
Lisa is making a mixture of Chlorine and water in her science class. She needs to make 13 (answered by ikleyn)

A chemist has 400 milliliters of a solution that is 40% water and 60% chlorine. She wants (answered by jorel1380)

Meg combines N oz of a solution that is 10% chlorine with Y oz of a solution that is 20%... (answered by josmiceli)

a chemist has 40 ml of a solution that is 50% chlorine. How much water should he add to... (answered by checkley77)

A 10% chlorine solution is to be mixed with a 25% chlorine solution to obtain 30 gallons (answered by stanbon)

a solution is 30% chlorine and another solution is 60% chlorine.how many liters of each... (answered by Fombitz)

If 8 percent of an 18-gallon solution is chlorine, how many gallons of water must be... (answered by ikleyn,greenestamps)

what is the desired strength (as a percent chlorine) of a hypochlorite solution being... (answered by solver91311)

a swiming pool has 40 gallons of water with 5 % chlorine. you want to lower it to 2.5%... (answered by josgarithmetic)