Question 387137: the sum of three numbers is 45. one number is 5 more than a second number it is also twice the third. find the numbers
Answer by robertb(5830)   (Show Source):
You can put this solution on YOUR website! x = one number,
x = s + 5, and x = 2t.
Then x + s + t = 45. By substitution,
x + x - 5 +x/2 = 45;
2x + x/2 = 50;
5x/2 = 50;
5x = 100;
x = 20, one number,
s = x - 5 = 15, the second number, and
t = x/2 = 10, the third number.
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