3 years ago

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

2 answers:

5 0

13 x 85 = 1105
78 + 91 = 169

169 / 1105 = 6.5

4 0

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

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