SOLUTION: How many ml of 4% and 1% solution are needed to make 1800 ml of 2% solution?

Question 1088646: How many ml of 4% and 1% solution are needed to make 1800 ml of 2% solution?
Answer by natolino_2017(77) (Show Source): You can put this solution on YOUR website!
Let x: ml. of the 4% solution
y: ml. of the 1% solution
x+y = 1,800 (total solution)
0.04x +0.01y = 0,02(1,800) = 36 (total component)
Solving x=600 ml. and y= 1,200 ml.
So answer is we need 600 ml of the 4% and 1,200 ml of the 1% solution.
In a more general case, we need 1/3 of the 4% solution and 2/3 of the 1% solution to make a solution of 2%.
4%x/3+ 1%*2x/3 = 2%*x when x is the total ml. of the solution.
@natolino_

RELATED QUESTIONS
HOW MANY ML OF 15% SOLUTION ARE NEEDED TO MAKE 1 GALLON OF 10%... (answered by stanbon)

how many mL of 50% dextrose solution and how many mL of water are needed to prepare 100... (answered by greenestamps,josgarithmetic)

how many ml of pure alcohol and how many ml of 4% alcohol solution must be combined to... (answered by josgarithmetic,ikleyn,greenestamps)

How much 1% boric acid solution and 5% boric acid solution are needed to make 30 mL of (answered by mananth)

How many ml of a 20% acid solution, and how many ml of 5% acid solution would I need to... (answered by addingup)

how many mL of a 2% (w/v) solution needed. to make 8 oz of a 1:200 solution. PLEASE... (answered by josgarithmetic)

how many ml of 50 dextrose solution are needed to obtain 25 g of... (answered by MonicaStitt)

A chemist wants to make 54 mL of a 17% acid solution by mixing a 13% acid solution and an (answered by checkley77)

process please: How many ml of a 30% acid solution must be mixed with 2 ml of a 40% (answered by checkley79)