SOLUTION: if i add a 20% solution to a 100% solution to get 2 liters of a 75% solution, how much of each do i need?

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Question 256793: if i add a 20% solution to a 100% solution to get 2 liters of a 75% solution, how much of each do i need?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Concentration equation
20A%2B100B=75%282%29=150
Volume equation
A%2BB=2
.
.
.
A=2-B
20%282-B%29%2B100B=150
40-20B%2B100B=150
80B=110
B=11%2F8
A=2-B=16%2F8-11%2F8=5%2F8
5/8 liter of 20% solution and 11/8 of 100% solution.