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Waec 2018 Economics Past QuestionsQuestion 56:(a) What is commodity money? (b) Identify any three problems associated with trade by barter. (c) Explain any three ways by which the advent of money has solved the problems of the barter system. Question 57:(a) What is a demand schedule? (b) State the law of demand. (c) Using appropriate examples, explain the following types of demand: (i) Competitive demand (ii) Derived demand (iii) Joint demand (iv) Composite demand |
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