G Marbles Company has the following information available regarding its materials: Managers expected to pay $5 per kilogram, but ended up paying $6 per kilogram. Each unit produced should take 2 kilograms; actual total usage was 2,100 kilograms. Finally, the company planned to produce 1,000 units, but only produced 950. Calculate the materials efficiency variance.

Mikkelson corporation's stock had a required return of 12.50% last year, when the risk-free rate was 3% and the market risk premium was 4.75%. then an increase in investor risk aversion caused the market risk premium to rise by 2%. the risk-free rate and the firm's beta remain unchanged. what is the company's new required rate of return? (hint: first calculate the beta, then find the required return.) do not round your intermediate calculations.