# Math Help - Need help with this word problem.

1. ## Need help with this word problem.

Question - How much water must be added to 15 L of alcohol to make a solution which is 60% alcohol?
I need an equation to solve the answer.
Jo

Question - How much water must be added to 15 L of alcohol to make a solution which is 60% alcohol?
I need an equation to solve the answer.
Jo
What is the starting concentration of the alcohol, or are we assuming it is 100%?

3. That;s it for the question.
So the 15L must be 100% alcohol.
So would you say 0% of water with no value for the water, as X??

4. ok I had to back to the basics on this one

$
\frac{15}{x}=\frac{60}{100}
$

solve for x, which will equal 25

25-15=10

I am sorry about the previous confusion for some reason this problem gave me a go for my money

5. Thank you for your help, it kinda makes sense, will have to look at it a bit longer. THANKS.