Tidwell Corporation sells a single product for $20 per unit.All sales are on account, with 60% collected in the month of sale and 40% collected in the following month.A partial schedule of cash collections for January through March of the coming year reveals the following receipts for the period. Tidwell 公司只销售一种产品，单价$20。所有的销售均是赊销，销售额的 60%本月收回，40%下月收回。 明年 1-3 月收回的现金额情况见下表： Other information includes the following.其他信息如下： ? Inventories are maintained at 30% of the following month’s sales.库存量维持在下月销量的 30% CMA Exam Retired Questions ? 2008 Institute of Certified Management Accountants ? Assume that March sales total $150,000.假定三月份的销售额为$150,000 The number of units to be purchased in February is 请问二月份的采购量是多少件？