Question

the sum of the digit of a 2- digit number is 8.if the digit are interchanged, the number obtained is 18 more than the original number . what is the original number?​

Answer 1

Answer:

No=1 0x + y

x + y = 8. (i)

10 y + x-18=IOx + y

-- 9x+9y=18

- x + y = 2. (2)

Add(1) and (2)

2 y=10

y=5,x=3

origl.No: 35