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The sum of three numbers is 91 . the third number is 2 times the first. the first number is 9 more than the second. what are the numbers?
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Feb 27, 2018
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The sum of three numbers is 91 . the third number is 2 times the first. the first number is 9 more than the second. what are the numbers?
Mathematics
high-school
Marvin Smit
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Let the second number be x.
First number = 9 + x
Third number = 2(9 + x) = 18 + 2x
Sum of the numbers = 91
9 + x + x + 18 + 2x = 91
4x + 27 = 91
4x = 64
x = 16
Thus,
The first number is 25. The second number is 16. The third number is 50.
Xiao
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Mar 5, 2018
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Xiao
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