Question

The ten's digit of a number is twice its unit's digit. The number obtained by intersecting the digits is 36 less than the original number . Find the original number.

Answer 1

Answer:

84

Step-by-step explanation:

Let, number be 10x+y.

First Case, x = 2y...............(i)

Second Case, 10x + y - 36 = 10y + x

            or, 9x - 9y = 36

          or, x - y =  4

         or, 2y - y =  4

         or, y = 4

Putting value of x in (i),

x = 2*4= 8

so, the number is 84.