SOLUTION: the tens digit of a two-digit number is twice the units digit. if the digits are reversed, the new number is 36 less than the original number. find the number.

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Hi,

Let x represent the unit digit     

10(2x) + x = 10x + 2x + 36

       9x = 36

        x = 4

Number is 84

CHECKING our answer***

 84 = 48 + 36

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