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Sum of 2 dogit number and …

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Sum of 2 dogit number and number obtained by reversing order of its digit 121 and 2 digit is differ by 3

    • Posted by Yadvinder Aulakh 6 years, 8 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Gaurav Seth 6 years, 8 months ago

    Let no at ones= x 
    Let no. at tens=10(x+3)
                           =10x+ 30
    New no.
    Let no. at ones place x+3
    let no. ta tens place 10x
    10x +30+x + 10x + x +3= 121
    22x=88
    x=88/22
    x=4
    the original no. is 74
    the new no. is 47

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