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Banking Sample Paper IBPS PO (PT) Sample Test Paper-2

  • question_answer
    If the digits of a two-digit number are interchanged, the original number is more than the newly formed number by 27 and the sum of the digits is 7, then what is the original number?

    A)  52                               

    B)  43

    C)  61                               

    D)  37

    E)  27

    Correct Answer: A

    Solution :

     Let the original number be 10y + x. If the number is interchanged it will be 10x + y. Now, according to the question, or, 9y - 9x = 27 or, y - x = 3                    ... (i) Again, x + y = 7                        ... (ii) Adding eqn (i) and (ii), we get or, 2y = 10 \[\therefore \] y = 5 Putting the value of y in eqn (i), we get x=2 Hence, the number is 52.


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