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zavej400
07.02.2022 •
Mathematics
Kristina needs to mix a 10% alcohol solution with a 50% alcohol solution to create 200 millileters of a 48% solution. How many millileters of each solution must Kristina use?
Kristina must mix
millileters of 10% solution and
millileters of 50% solution.
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Ответ:
Step-by-step explanation:
Let v represent the volume of the 50% solution, in milliliters. Then 200-v will be the volume of 10% solution. The amount of alcohol in the mix will be ...
0.50v +0.10(200-v) = 0.48(200)
0.40v +20 = 96 . . . . . . simplify
0.40v = 76 . . . . . . . . . subtract 20
v = 190 . . . . . . . . . . . divide by 0.4
Kristina must mix ...
10 mL of 10% solution
190 mL of 50% solution
Ответ:
3
Step-by-step explanation: