SOLUTION: The sum of three numbers is 30. The second number is 3 times the first. The third number is twice the second number. What are the three numbers?

Algebra.Com
Question 825625: The sum of three numbers is 30. The second number is 3 times the first. The third number is twice the second number. What are the three numbers?
Answer by Seutip(231)   (Show Source): You can put this solution on YOUR website!
Let
x = be the first number
3x = second number
6x= third number
30 = x + 3x + 6x
30 = 10x
x = 3
so the 1st number is 3, the second number is 9 and the third number is 18 :)

RELATED QUESTIONS

There are three numbers on a list. The first number is twice the second number; and the... (answered by ikleyn)
The sum of three numbers is 116. The third number is 3 times the second. The second... (answered by stanbon)
The sum of three number is 97 the third number is 3 times the second the first number is... (answered by josgarithmetic,Alan3354)
Joe is thinking of three numbers. The first number times the second number equals the... (answered by JBarnum)
The sum of three numbers is 94. The first number is 6 less than the second . The third... (answered by nyc_function)
Twice the first number is eleven more than the sum of the other two numbers. The sum of... (answered by mananth)
the sum of three numbers is 66. the third number is 9 more than the first. the second... (answered by timvanswearingen)
The sum of three numbers is 104 . The second number is 3 times the third. The third... (answered by Fombitz)
The sum of three numbers is 104. The second number is 3 times the third. The third number (answered by josgarithmetic)