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Seven times a two digit number …

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Seven times a two digit number is equal to four times the number obtained by reversing the order of its digit. If the difference between digits is 3. Determine the number.????

    • Posted by Mukul Empire 6 years, 10 months ago

    CBSE > Class 10 > Mathematics
    • 2 answers

    Gaurav Seth 6 years, 10 months ago

    Let numbers be x at ones place and y at tens place so 
    10y+x is that digit 
    now reversed digit is 10x+y
    according to question 
    7 (10y+x)=4(10x+y)
    x=2y (i)
    now 
    given 
    x-y=3
    from eq. i 2y=x
    2y-y=3
    y=3
    so
    x=63 
    required original no. is 36 and reversed digit is 63

    1Thank You

    Honey ??? 6 years, 10 months ago

    36

    1Thank You

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