Find the two digit number such that if you treble it and you take away four times the reverse of that number, the ansswer will be 8.

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  1. Start with a number AB which is 10A+B

    and the reverse is 10B+A

    using the information in the question



    Now neither A or B can be zero (0A or 0B is not a valid number)

    also we can say that if B>=A then the result is negative.

    We can from the equation infer that A is only slightly larger than B

    So I tred
    A=5 B=3
    A=6 B=4
    A=7 B=5

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