SOLUTION: a chemist mixes a 10% saline solution with a 20%saline solution to make 500ml of a 16% saline solution. how many milliliters of each solution does the chemist mix together.

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Question 1106971: a chemist mixes a 10% saline solution with a 20%saline solution to make 500ml of a 16% saline solution. how many milliliters of each solution does the chemist mix together.
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
10x%2B20%28500-x%29=16%2A500

The equation accounts for anhydrous "saline", with x as the volume of the 10% saline solution.

STEPS

x%2B2%28500-x%29=16%2A50
x%2B1000-2x=800
-x=-200
highlight%28x=200%29-------mL of the 10%
-
500-x=highlight%28300%29------mL of the 20%

You can check those results on your own.