Question

a number consists of two digits whose sum is 8 if 18 is added to the number its digits are reversed find the other no

Answer 1

Answer:

Let x and y be two digits and number be 10x+y

It is given

x+y=8. equation 1

10x+y+18=10y+x

9x-9y=-18

x-y=-2 equation 2

Add equation 1 and 2, you will get

2x=6, x=3

Put this value of x in any of the above equations,

you will get y=5

The number is 35