Question

The difference between 2digit number and the number obtained by reversing the digit 54.find the difference between the digit of the 2digit number.

Answer 1

Let the two digit number be 10x+y

Reversing its digit=10y+x

Difference between them

=10x+y-(10y+x)=27

Opening the brackets and solving it,we get

9x-9y=27

Taking 9 as common

x-y=3

Therefore the difference is 3