Gwen the brewer obtains her bagged malted grains from a single supplier. Demand is reasonably constant throughout the year, and last year Gwen used 5000kg of malt in 20kg bags. Gwen estimates that the costs of placing an order at around £5 each time an order is placed. She also estimates that the annual cost of holding inventory is 4% of the purchase cost. A 20kg bag of malt costs £28. How many bags of malt should Gwen order at a time? Select one alternative: 47 bags 132 bags 15 bags 211 bags 30 bags