SOLUTION: The sum of two numbers is twenty-one. Twice the larger number is four times the smaller number. Find the two numbers. Only a math teacher would like a problem like this.

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Question 310435: The sum of two numbers is twenty-one. Twice the larger number is four times the smaller number. Find the two numbers. Only a math teacher would like a problem like this.
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
S + L = 21

4S = 2L ___ 2S = L

substituting ___ S + (2S) = 21 ___ 3S = 21 ___ S = 7

substituting ___ (7) + L = 21 ___ L = 14