Question

The sum of the digits of a two digit number is 11 if 63 is subtracted from the number thedigits get interchange what is the number

Answer 1

Hii frnd.

Let the ten's digit be x
and unit's digit be y
A to Q
x+y=11        eq-1
10x+y-63=10y+x      
9x-9y=63
x-y=7            eq-2
On solving eq1 and 2 simultaneously
x+y=11
x-y=7
x=4

On putting the value of x in eq-1
4+y=11
y=7

So,the number will be 47

Hope it helped u.