A number consist of two digits whose sum is 9 If 9 is subtracted from the number its digit are interchanged find the numbers
Answers
Answered by
0
Let the number be XY
The value of the number is 10X+1Y
Given that 9 is subtracted from the number
10X+Y-9
Given that the digits interchange it becomes YX
The Value of the number is 10Y+X
10X+Y-9=10Y+X
9X-9Y=9.......(1)
X-Y=9
X=9+Y
The numbers are 21 and 12
Similar questions