In a two-digit number, the unit digit is...

In a two-digit number, the unit digit is equal to the square of tens digit. The difference between the original number and the number formed by interchanging the digits is 54. What is the original number?

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In a two digit number,the unit digit is equal to the square of tens digit.The difference between the original number and the number formed by interchanging the digits is 54. What is 60% of the original number?

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