A man spends 100 Rs. on screws costing 40 paise per dozen and 50 Rs.on screws costing 50 paise per dozen,what is the average cost per dozen
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the average cost is 50
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A man spends 100 Rs. on screws costing 40 paise per dozen and 50 Rs.on screws costing 50 paise per dozen,what is the average cost per dozen is 50
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