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posted by KevinR .
Serena paid $20.20 for 36 rulers and folders. She bought 16 more folders than rulers. If each folder cost $0.50 more than each ruler, how much did each folder cost?

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Serene paid $20.20 for 36 items of rules and files.there were 16 more files than rulers.if each file cost $.50 more than each ruler,how much did each file cost?