SOLUTION: One number is two times another number.The sum of the numbers is 90. What are the two numbers

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Question 501496: One number is two times another number.The sum of the numbers is 90. What are the two numbers
Answer by oberobic(2304) About Me  (Show Source):
You can put this solution on YOUR website!
x = 2y
x + y = 90
x = 90-y
.
substitute
.
90-y = 2y
90 = 3y
y = 30
.
x = 2y
x = 60
.
Always check your answer.
Is 60 two times 30?
Yes, it is.
.
Answer: The two numbers are 30 and 60.