47. To find the percentage by which operating income will change, we multiply the This works for both percentage change in volume by the and in volume. 48. When choosing between alternative cost structures, managers find it helpful to calculate which is the volume of sales that would generate the total cost under either alternative. 49. How do managers calculated the indifference point? 50. To choose the most profitable cost structure, when volume is expected to be lower than the indifflerence point, managers should choose the option with the