In a two digit number, the ten’s digit is three times the unit’s digit. When the number is decreased by 54, the digits are reversed. Find the number.

Explanation

Let the digit in the unit's place be x and the digit in the ten's place be y. Then,
Number `=10y+x`


According to the given condition, we have
`y=3x … (i)`



Number obtained by reversing the digits `=10x+y`
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