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# Airplane fuel worth \$126 per pound and \$135 per pound is mixed with a

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Re: Airplane fuel worth \$126 per pound and \$135 per pound is mixed with a [#permalink]
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ab965 wrote:
Airplane fuel worth \$126 per pound and \$135 per pound is mixed with a third variety of high grade fuel in the ratio 1:1:2. If the resultant mixture is worth \$153 per pound, the price of the third variety of fuel per pound will be:
A. \$169.50
B. \$170
C. \$175.50
D. \$180
E. \$205

Letting n = the price per pound of the third variety of fuel, we can create the following equation:

(126x + 135x + n(2x)) / (4x) = 153

261x + 2nx = 612x

261 + 2n = 612

2n = 351

n = 175.5

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Re: Airplane fuel worth \$126 per pound and \$135 per pound is mixed with a [#permalink]
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Re: Airplane fuel worth \$126 per pound and \$135 per pound is mixed with a [#permalink]
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