Question

If income of one person is 30% morethan that of other person ,then income of second person is how much percent less than that of 1st person

Answer 1

30%, because if you consider the income of the second person to be x, the income of the first person will be x+30%. To get x, we subtract 30% from (x+30%).
x= (x+30)-30= x+30-30
=x+0
=x
Therefore, the difference is 30%.