10/23 数学JJ 44

pecan_cracker

大概题目是这样：

1. M inventory rate: 50, R inventory rate: 12.
2. Discountrate is inversely proportional to the inventory rate.
3. R dicount rate: 15%，求 M dicount rate.

构筑给的答案是2.6%。请问是怎么计算出来的？
我计算公式是 50/12=15%/M, M=3.6%

Masonh

根据目前的题目信息来看，应该是3.6%