Question

the sum of two digit no. and the no. obttain by reversing the oder of its digit is 99.its diff. is 3. find the no.

Answer 1

Solution :-

given by :-

let tens digit x= and ones =y

acourding to quetion:-

(10x+y)+(10y+x)= 99

11x +11y =99

x+y= 9...........(1)

x = 9-y


x-y = 3.............(2)

x's value in put eq(2)

9-y-y = 3

-2y=3-9

y= 6/2

y = 3
put y 's vale in eq(2)

x+2= 9

x=9-3

x=6

(x,y) = (6,3) ans