47. If Company X has lower business risk than Company Y, what impact

will a 5% increase in sales have on the operating income of both

companies? Company X will have lower risk and company Y will have higher risk

80. What is the effect on EBIT of a small decrease in sales on a company that has a high degree of business risk? They would have a large decrease in EBIT

Can someone please explain how these answers were received and explain how I can solve problems like this in the future? Thank you.