SOLUTION: The sum of three numbers is 89 The second number is 6 times the first. The third number is 15 less than the second. What is the first number?

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Question 1157261: The sum of three numbers is 89
The second number is 6 times the first.
The third number is 15 less than the second.
What is the first number?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
The sum of three numbers is 89

let first number be x
The second number is 6 times the first.
second number is 6x
The third number is 15 less than the second.
6x-15
Add them up
x+6x+6x-15=89
13x-15=89
13x=104
x=8 the first number