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A chemist needs 130 milliliters of a 39% solution but has only 3% and 55% solutions available. How many milliliters of the 3% solution should be used...
A chemist needs 130 milliliters of a 39% solution but has only 3% and 55% solutions available. How many milliliters of the 3% solution should be used to get the desired solution?
- A. She should use 90 mL of the 3% solution.
- B. None of these.
- C. She should use 50 mL of the 3% solution.
- D. She should use 70 mL of the 3% solution.
- E. She should use 40 mL of the 3% solution.