Question

The ratio of two natural numbers 'u' and 'v' is 3:4, respectively. When 12 is added to 'u' and 8 is subtracted from 'v', the ratio of 'u' to 'v' becomes 5:4. Find the square of the difference between the two numbers.

A 112
B 111
C 121
D 221
E None of these
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