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  1. The ratio between a two-digit number and the sum of the digits of that number is 4:1. If the digit in the unit place is 3 more than the digit in the ten's place, what is that number?

    2. A.
    24
    B.
    63
    C.
    36
    D.
    None of these.

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    Answer : Option C

    Explanation :

    Let ten's digit be x. Then, unit's digit = (x+3).
    Sum of the digits = x +(x+3) = 2x+3
    Number = 10x+(x+3) = 11x+3

    Then,
    Apti Problems on Numbers
    11x + 3 = 8x + 12
    3x = 9
    X = 3
    ∴ Number = (11x+3)
    = 33 + 3 = 36

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