Question 905406
If the income of a man is decrease by 10% than .by how much percentage it should  be  increase to bring back to original income?
Let income is Rs X 
income is reduced by 10% new income will be =(100-10)%of X=90% of X = 0.9x
it should be the same means X
difference =x-0.9x = 0.1X
increased percentage = difference x 100/min value 
                     =0.1X(100)/0.9X
                    =100/9=11.1 % 
Answer it should be increased by 11.1 %