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8 December, 04:31

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

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Answers (2)
  1. 8 December, 04:43
    0
    13 x 85 = 1105

    78 + 91 = 169

    169 / 1105 = 6.5
  2. 8 December, 04:45
    0
    Simultaneous equations

    x+y=13

    78x+91y=85 (13)

    (x, y) = (6,7)
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