SOLUTION: The sum of 3 number is 38. The second number is nine more than double the first, and the third number is one less than double the first.
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Question 738104: The sum of 3 number is 38. The second number is nine more than double the first, and the third number is one less than double the first.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The sum of 3 number is 38. The second number is nine more than double the first, and the third number is one less than double the first.
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Equations:
a + b + c = 38
b = 2a + 9
c = 2a-1
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Substitute for "b" and for "c" and solve for "a":
a + (2a+9)+(2a-1) = 38
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5a + 8 = 38
5a = 30
a = 6
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b = 2a+9 = 12+9 = 21
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c = 2a-1 = 12-1 = 11
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Cheers,
Stan H.
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