Question 278658
the sum of two numbers is the same as four times the smaller number. if twice the larger is decresed by the smaller the result 30. find the numbers?
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Let x = larger number 
Let y = smaller number 
x + y = 4y --> x = 3y
2x - y = 30
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2*3y - y = 30
5y = 30
y = 6
x = 18