SAT Math Practice Problems

Question:


200 mililiters of solution B has 40% sulfuric acid by volume and 400 mililiters of the solution C has 90% sulfuric acid by volume. If 20 mililiters of solution B is added to 20 mililiters of solution C, what is the percent of sulfuric acid by volume in the resulting mixture?

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-Mixed Numbers such as 2
1
2
must be entered as either a decimal, 2.5 or a fraction, 3/2.

-If a Decimal Answer does not fit in the space, it MUST be rounded AND contain 4 characters, including the decimal.
For example,
2
3
would be .667 while .666 would be incorrect and .67 would be incorrect

-Do NOT add a leading zero to a decimal, so 0.33 would be incorrect, while .33 would be correct.
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