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20-08-2017
Mathematics

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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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Аноним Аноним

22-08-2017

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.

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