Question 490925
Find two numbers whose difference is 8 and 1/2 of whose sum is 16. 
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Equations:
x - y = 8
(1/2)(x+y) = 16
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Rearrange:
x - y = 6
x + y = 32
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Add and solve for "x":
2x = 38
x = 19
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Solve for "y":
x - y = 6
19 - y = 6
y = 13
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Cheers,
Stan H.