A person saves 10% of his salary every month. If his salary increases by 12% and the expenditure increases by 10%, then what will be the change in his saving per month?

उत्तर देखें और व्याख्या

उत्तर: (B) 30% increase

व्याख्या

Salary 100, spending 90, saving 10. New salary 112, spending 99, saving 13: a 30% increase.