Question

When sanjay interchange the digits of a two digit number which is lesser than the original number by 36 , if the sum of the two digits of the number is 10 then what is the original number

Answer 1

Let the tens digit be X and ones digit be y

Then, original no.= 10x + y

Interchanged no.= 10y + x

A.T.Q

10x + y= 10y + x +36

x-y = 4

Also,

x+y =10

Solve both the equation by elimination

you will get,

x=7

y=3

Hence, the original no. is 73