SOLUTION: The sum of three numbers is 144. The second number is 6 more than the first . The third number is 4 times the second. What are the numbers?

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Question 808927: The sum of three numbers is 144. The second number is 6 more than the first . The third number is 4 times the second. What are the numbers?
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
x + y + z = 144
y = x + 6
z = 4y = 4(x + 6)

Write everything in terms of x.

x + y + z = 144
x + (x + 6) + 4(x + 6) = 144
6x + 30 = 144
6x = 114
x = 19

solution: (x, y, z) = (19, 25, 100)