a) For example, at a price of S10, a mask seller would provide only 50 masks, but at $40 he would supply 100 masks. However, at $45, buyers demand just 50 masks, but at $15, the quantity demanded...

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Extracted text: a) For example, at a price of S10, a mask seller would provide only 50 masks, but at $40 he would supply 100 masks. However, at $45, buyers demand just 50 masks, but at $15, the quantity demanded would increase to 100 masks. Based on the economic concept of demand and supply, draw the appropriate graph. Find out the Equilibrium price & quantity.