total asset turnover没有讲过，解析里的roa公式也没讲过

NO.PZ2023081403000145 问题如下 Q. analyst compiles the ta in Exhibit 1 for a company:Exhibit 1: Net Profit MarginBaseonly on the information above, the most appropriate conclusion is that, over the perioFY13 to FY15, the company’s: A.net profit margin anfinancileverage have crease B.net profit margin anfinancileverage have increase C.net profit margin hcreasebut its financileverage hincrease C is correct. The company’s net profit margin hcreaseanits financileverage hincrease ROA = Net profit margin × Totasset turnover. ROA creaseover the periospite the increase in totasset turnover; therefore, the net profit margin must have creaseROE = Return on assets × Financileverage. ROE increaseover the periospite the op in ROtherefore, financileverage must have increase 看了上面的解析Financileverage可以通过分解ROE得到，ROE=ROleverage这个公式自己试着推了一下，但是推不出来，请问是怎么推倒的呢

NO.PZ2023081403000145 问题如下 Q. analyst compiles the ta in Exhibit 1 for a company:Exhibit 1: Net Profit MarginBaseonly on the information above, the most appropriate conclusion is that, over the perioFY13 to FY15, the company’s: A.net profit margin anfinancileverage have crease B.net profit margin anfinancileverage have increase C.net profit margin hcreasebut its financileverage hincrease C is correct. The company’s net profit margin hcreaseanits financileverage hincrease ROA = Net profit margin × Totasset turnover. ROA creaseover the periospite the increase in totasset turnover; therefore, the net profit margin must have creaseROE = Return on assets × Financileverage. ROE increaseover the periospite the op in ROtherefore, financileverage must have increase 解析中关于ROA和ROE的公式与讲义中写的不一样，是什么原因？以及麻烦详细讲解一下解题思路。