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Lilit [14]
3 years ago
7

If I have a 32 fl oz os a solution that has 62% alcohol, how much of a solution of 91% alcohol do I need to add to get a final s

olution of 90% alcohol?
Chemistry
1 answer:
laiz [17]3 years ago
8 0

Answer : The amount of solution needed is, 97.3 fl oz

Explanation :

Let the amount of solution needed be, x

Thus, the equation will be:

(x\times 0.62)+(32-x)\times 0.91=0.90

By solving the expression, we get the value of 'x'.

0.62x+0.91\times 32-0.91x=0.90

0.62x+29.12-0.91x=0.90

-0.29x+29.12=0.90

-0.29x=0.90-29.12

-0.29x=-28.22

0.29x=28.22

x=\frac{28.22}{0.29}

x=97.3

Therefore, the amount of solution needed is, 97.3 fl oz

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