(a) Staff of KFC has to attend on-the-job training for increasing the understanding of KFC's products and its daily operation. This on-job-training is always compulsory and free-ofcharge. Explain the reasons that this training is compulsory and free-of-charge. (4 marks)

Joey Yung, a Hong Kong famous singer, was having her concert on 5 - 24 August 2019. A long queue was found when the tickets were publicly sold. (a) With the aid of a diagram, explain the meanings

(b) Explain why profit-seeking concert organizers do not raise prices. (3 marks)