How much 78 octane gas and 91 octane gas should be blended to make 13 gallons of 85 octane gas

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asked Mar 19, 2017 98.9k views

4 votes

How much 78 octane gas and 91 octane gas should be blended to make 13 gallons of 85 octane gas

Mathematics
college

Bensonius asked

by Bensonius

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2 Answers

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Simultaneous equations
x+y=13
78x+91y=85(13)
(x,y)=(6,7)

Sckott answered Mar 21, 2017

by Sckott

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3 votes

13 x 85 = 1105
78 + 91 = 169

169 / 1105 = 6.5

JafarKhQ answered Mar 25, 2017

by JafarKhQ

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