Sum of the digits of a two digit number is 9. When we interchange the digits , it is found that the resulting new number is greater than the original number by 27. What is the two - digit number ?
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-> Let the ten's digit =x and
unit's digit =y Then
Original number will be =10x+y
Now ATQ
x+y=9___1)
10y+x=10x+y+27
x-y-3___2)
Adding the two eq.
2x=6 x =3
Putting this value in any eq we Get Y=6
The Number is 36
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