SOLUTION: i am having 5 kg solution of 60%, and i want to make it to 55% solution. so how much water to be added to make it 55% soution? thanks,

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Question 1049134: i am having 5 kg solution of 60%, and i want to make it to 55% solution.
so how much water to be added to make it 55% soution?
thanks,
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
This water to add will be in KILOGRAMS. Your 60% solution is measured in KILOGRAMS. We would expect that your percent concentrations are as mass per mass. No commentary of what is in the solutions.

p, how much mass of water to add.

60%2A5%2F%28p%2B5%29=55
60%2A5=55%28p%2B5%29
60=11%28p%2B5%29
11p%2B55=60
11p=5
p=5%2F11---------this much fraction of a kilogram of water to add