Toro Rosso Corporation (TRC) manufactures a single product, the RB18. Historically, TRC has been able to compete by providing a superior product than the competitors. The market for the RB18 is not competitive but has been steadily declining over the past few years. Specific revenue and cost information is provided below. Material cost is the cost considered to be variable and conversion costs are fixed costs. Revenue and Cost Information 2023 2022 Volume of RB18 produced and sold 7,700 8,000 Unit selling price $550 $560 Direct materials used in production (components) 25,000 32,000 Direct material cost per component (assume equal value) $32.00 $35.00 Manufacturing capacity (units of RB18) 10,000 15,000 Conversion cost $925,000 $900,000

In 2023, the market for the RB18 decreased by 5%. All changes in market share are the result of TRCs strategic actions.

Calculate how much of the change in operating income is due to growth, then calculate the change in operating income due to industry market size and market-share.

Total Growth $

Is this variance favorable or unfavorable?

Total Market-size $

Is this variance favorable or unfavorable?

Total Market-share$

Is this variance favorable or unfavorable?