As a result of a change in strategy to selling differentiated products at premium prices, a company's gross margin ratio increased by 5 percentage points (i.e., from 35 percent to 40 percent). The most likely effect on the company's operating margin ratio as a result of the changes in strategy would be an increase? A equal to 5%. B less than 5%. C greater than 5%. 查看解析 上一题 下一题 正确答案B 您的答案A 请问SG&A中 含广告费和R&d费用吗？

老师好，这是金程提供的原版书课后题time value部分18题。请问，2/(0.06/4)=133已经是PV了，为什么下面还要再折现4次呢，谢谢

reading15的33题，对于答案有点疑问，答案的计算只是通过$93这个项目的调节得到的。但是$12的费用增加不是会影响NI，进一步影响equity的吗？为什么12*（1-30%）的部分没有被计算考虑？

reading15的31题，我选了A，为什么不对？工资增长率变低，c.s.c变小啊。。。

老师 reading9课后题第33题为什么不选C？ 还有第35题哪里看出来“ the time series also has serial correlation in the residuals from the trend model”？

老师 reading9第29题 怎么看出来有单位根？

reading15的25题，关于计算时候用的这个年限有疑问，为什么是17+10，不太理解。

请老师解释下统计套利的含义, 举个例子也可. 谢谢老师!

Assume a firm with a debt to equity ratio of 0.50 and debt equal to $35 million. It makes a commitment to acquire raw materials with a present value of $12 million over the next 3 years. For purposes of analysis, the best estimate of the debt to equity ratio should be: A 0.500. B 0.573. C 0.671. 查看解析 上一题 下一题 正确答案C 您的答案A本题平均正确率：50% The original debt / equity ratio = 35 / 70 = 0.5. Now adjust the numerator but not the denominator. Why? You have commitments (liabilities) but no new equity because (non-current) liabilities and assets are increased by the same amount. D/E = (35 + 12) / 70 = 0.671. 请问：这12M应该是A/P吧，而AP是不计利息的，算L,但是不算在DEBT里面，所以理论上比值应该保持不变？

为什么在算tia的时候不减去400000