A compound bar graph below represents salaries of six employees in R100’s for two
companies. Use the graph to answer the questions below.
3.1 Moesha claims that the mean salary of Company A, is R1 000 more than the mean
salary of Company B. Verify, with calculations, whether her statement is valid or not. (6)
3.2 What is the modal salary of Company B? (2)
3.3 Thato, a worker at Company A receives the modal salary. He lends 15% of one
month’s salary to a friend to be paid back over two years. The friend must pay back
the money with interest at an interest rate of 5% compounded annually. How much
will he receive after two years? (6)
3.4 What is the probability of randomly choosing an employee who earns a salary of less
than R8 000 at Company A? (2)
[16]