SOLUTION: If there are 500 cm^3 of chemical in 1 L solution, how many cm^3 of water must be added to dilute it to a 25% solution? (1,000cc = 1L)

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Question 781572: If there are 500 cm^3 of chemical in 1 L solution, how many cm^3 of water must be added to dilute it to a 25% solution? (1,000cc = 1L)
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
In other words, the given solution is 50% v/v and you want to know how much water added will make 25% v/v.

1 cm^3 is same as 1 milliliter.

Let y = volume of water to add.
500%2A50%2F%28500%2By%29=25------You need to understand this equation.
25000=25%28500%2By%29
1000=500%2By
y=500