1.

the sum of the digit of a two digit number is 12 if the number formed by reversing the digit is greater than the orignal number by 54 find the orignal number

Answer»

Let unit digit be X and tens digit be y
so according to QUESTION

x+y=12. (i)

SUPPOSE no. was 10y+x
so after reversing it will become 10y+x

now according to condition

10y+x=10x+y+54

now solve these TWO equations.....

9y-9x=54

y-x=6. -(ii)

y=9
and. x=3



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