SOLUTION: A 200 ml shampoo with 80% cleansing power its to be diluted with water. This is done by drawing out some amount and replacing it with water. Agnes wants a mild shampoo of 60% clean

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Question 1005196: A 200 ml shampoo with 80% cleansing power its to be diluted with water. This is done by drawing out some amount and replacing it with water. Agnes wants a mild shampoo of 60% cleansing power. How much must she draw off and replace?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
A 200 ml shampoo with 80% cleansing power its to be diluted with water.
This is done by drawing out some amount and replacing it with water.
Agnes wants a mild shampoo of 60% cleansing power.
How much must she draw off and replace?
:
let x = amt 0f original mixture to be removed and the amt of water to be added
:
.80(200-x) = .60(200)
160 - .8x = 120
160 - 120 = .8x
40 = .8x
x = 40/.8
x = 50 ml removed and 50 ml of water added