Question

我把购买X后数的数学混为一谈。如果是《合同法》,就很容易计算你想要的物品数量和你必须支付的金额。例如,当你想要4人时,你只得购买2美元和支付2美元,但购买3台的费用是免费的,或购买30台是免费的。我认为非常容易地计算一下,在我的领导下,但在我试图找到一种反映这种情况的公式时,我会说(因为我的数学基础薄弱)。

Problem description

Calculate Total Cost after Subtracting Quantity of Free Promotional Products Each laundry detergent product sold by the store to consumers costs X VND. The store has a promotion: for every 10 products purchased (excluding the additional free ones), you get 1 product for free. The customer wants to buy n products. Calculate the total amount the customer has to pay for those n products. The input is the price of a product and the number of products the customer buys The output will be the amount the customer must pay (take up to 2 decimal places)

INPUT
50000 12
OUTPUT
550000.00

INPUT
50000 10
OUTPUT
500000.00

是否有办法代表钱?

Answer 1

如果你购买0至x产品,你支付0至x美元。如果你购买x+1至x+y,你支付x。然后周期开始。

如果你想要生产产品,即整整年限值(n/(x+y),每周期就支付x产品,加上其余的上限 = n-下限(n/(x+y))=(x+y)。其余部分,如果上限为0至x,或者如果上限为x+1至x+y,则由您支付。

如果是某一产品的价格,则总价为平价(n/(x+y))=x=p=p=或下限(n/(x+y)=x=p+x=p=p,根据该数值,中间价为平价。

Problem description

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