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Mama L [17]
3 years ago
13

Twice the difference between a number and 10 is equal to 6 times the number plus 16. What is the number?

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
8 0
This is a lot of math to write.... so I'll just say the answer is -21 :D
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Maria has added 2 liters of pure alcohol to 8 liters of a 48% alcohol solution. What is the alcohol concentration of the resulti
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Answer:

The alcohol concentration of the resulting solution is 58.4%

Step-by-step explanation:

- At first we must to find the quantity of pure alcohol in the 8 liters

∵ The alcohol concentration is 48% in 8 liters

∴ The quantity of pure alcoholic = \frac{48}{100}*8=3.84 liters

- She added 2 liters pure alcohol to the solution that means the solution

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∵ She added 2 liters pure alcohol

∴ The quantity of pure alcohol = 2 + 3.84 = 5.84 liters

∴ The resulting solution = 2 + 8 = 10 liters

- Now we need to find the concentration of alcohol in the resulting

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∵ The quantity of pure alcohol = 5.84 liters

∵ The resulting solution = 10 liters

∴ The concentrate of alcohol = \frac{5.84}{10}*100 % = 58.4%

The alcohol concentration of the resulting solution is 58.4%

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21%    this is the exact answer i dont knw how to explain so ill just add charachters                                                                                                                                                                                                                                                                         

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