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2 years ago

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Geoff wants to make a 100 ml of 5% alcohol solution mixing a quantity of a 2% alcohol solution with a 7% alcohol solution. What

are the quantities of each of the two solutions (2% and 7%) he has to use?
____ ml of the 2% solution

____ ml of the 7% solution

1 answer:

Paha777 [63]2 years ago

7 0

Answer:

3

Step-by-step explanation:

753

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I have a feeling I've seen this question before
anyway

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so we gots

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elimination
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multiply 2nd equation by -3 and add to 1st equation

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<u>-9A-6B=-9 +</u>
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-4A=-2
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plan A lasts 1/2 hour or 0.5 hour or 30 mins
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Alika [10]

Answer:

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Step-by-step explanation:

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