<PRE><B>Question 815622</B>
weight of (25 - 8 = 17 gallons) of fuel:
2662 - 2560 = 102 lbs
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density of fuel (weight per gallon):
D = 102/17 = 6 lbs/gallon
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Answer 1:
the airplane weight equation:
w = 6g + E
where E is the airplane empty weight
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Answer 2:
airplane empty weight:
w = 6g + E
2560 = 6(8) + E
E = 2560 - 6(8)
E = 2560 lbs - (6 lbs/gal * 8 gal)
E = 2512 lbs
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Answer 3:
the airplane weight equation, now complete:
w = 6g + 2512
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