In a number of two digits, the ratio of digit in ten's place and digit in unit's place is 3 : 1. If 3 is added to three times of the sum of its digits then the opposite number is formed, find the initial number.
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If ratio is 3:1, then possible values are 31, 62, and 93. 9+3=12, 12*3 = 36, 36+3=39 which is 93 in reverse (assuming that is what 'opposite' number means
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