SOLUTION: How much water should be added to 40L of a 35% acid solution to reduce it to a 25% solution?

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Question 841054: How much water should be added to 40L of a 35% acid solution to reduce it to a 25% solution?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

How much water highlight_green%28x%29 should be added to 40L of a 35% acid solution (65% water)

to reduce it to a 25% solution (75% water)

water = water

+.65%2A40L++%2B+x+=+.75%2840L+%2B+x%29    |Solve for x

          +x+=+%28.10%2A40L%29%2F.25