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A store bought 10 dozen of a certain toy for $24.00 per dozen and it priced the toy to yield a markup of 50% based on selling price. After Christmas it had forty left over so it priced the remainded to give a markup of 50% based on cost. Assuming all sold at this markdown, find

(a)The regular selling price [$48.00/dozen]

(b)the after Christmas price [$36.00/dozen]

(c) the effective markup rate based on sales [45.45%]