Q1. A man spends 30% of his salary for house rent and 75% of the remaining in the other work.

What percent of his salary does he save?

Solution:-

                   Let the salary be 100 Rs.

                   then 30% of his salary = 100*30/100= 30

      here,  remained part of his salary is = 100-30= 70

      Now again , 75% of remaining salary = 70 *75/ 100 = 52.5

      so, saving is = 70-52.5=17.5 

hence , 

           he saves 17.5% of his salary . 

                                                                                       Manish vishwakarma.