Last year 27% of the people who applied to a graduate school were accepted. The graduate school accepted 648 people last year. How many people applied to the graduate school last year?

The correct answer is b, social stratification is needed for a society to exist. marxist theory regarding social stratification is that due to the differing economic capacities among people in society, a natural separation occurs between those that own the means of production and those that sell their labour in the production chain.