Question 517508
There are two numbers: x and y.
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x is 25% of y.
so
x = .25*y
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Obviously, the larger number is 'y'.
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The larger number is 12 more than the smaller number.
.
y = x+12
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substitute x = .25*y
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y = .25y + 12
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.75y = 12
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y = 12/.75
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y = 16
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y = x+12
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x = y-12
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x = 16-12
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x = 4
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Always check your solution.
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Is x 25% of y?
Yes, 4 is 1/4 of 16.
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Is y 12 more than x?
Yes, 16 is 12 more than 4.
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Answer:  The two numbers are 4 and 16.
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Done.