January 31, 2017 $ Net sales Net earnings Average total assets January 31, 2018 40,000 $ 2,400 $ 32,000 $ $ 38,550 2,200 31,350 $ $ 1. Compute net profit margin ratio for the years ended January 31, 2018 and 2017. Did it improve or worsen in 2018? 2. Compute asset turnover for the years ended January 31, 2018 and 2017. Did it improve or worsen in 2018? 3. Compute return on assets for the years ended January 31, 2018 and 2017. Did it improve or worsen in 2018? Which component-net profit margin ratio or asset turnoverwas mostly responsible for the change in the company's return on assets? Kaiser Grocery Corporation reported the following information in its comparative financial statements for the fiscal year ended January 31, 2018: (Click the icon to view the data.) Read the requirements. Requirement 1. Compute net profit margin ratio (%) for the years ended January 31, 2018 and 2017. Did it improve or worsen in 2018? Identify the formula, then calculate profit margin for 2018 and 2017. (Round your answers to the nearest hundredth of a percent, X.XX%.) Net profit margin ratio % 2018 = % 2017 %