Question

In a lab, a 30% acid solution is being mixed with a 5% acid solution to create a 10% acid solution. What is the ratio of

the amount of the 30% solution to the amount of 5% solution used to create the 10% solution?
1:3
O 1:4
O 1:5
O 1:6

Answer 1

To create a 10% acid solution, you need a ratio of 4 parts of the 30% solution to 1 part of the 5% solution.

Step-by-step explanation:

To create a 10% acid solution, you are mixing a 30% acid solution with a 5% acid solution. Let's assume that you mix x units of the 30% solution with y units of the 5% solution. Since you want the resulting solution to be 10% acid, you can set up the following equation:

(30x + 5y)/(x + y) = 10

Simplifying the equation, we get:

30x + 5y = 10(x + y)

30x + 5y = 10x + 10y

20x = 5y

Dividing both sides by 5, we get:

4x = y

So, the ratio of the amount of the 30% solution to the amount of the 5% solution is 4:1.