Use the data from S7-15 to compute Vicki's operating leverage factor at an expected sales level of

Question:

Use the data from S7-15 to compute Vicki's operating leverage factor at an expected sales level of 1,000 quilts. If sales volume increases 20%, by what percentage will her operating income change? Prove your answer by calculating operating income at a sales volume of 1,000 and a sales volume of 1,200.