HighTech Inc. and OldTime Co. compete within the same industry and had the following operating results in 2019: Sales Variable expenses Contribution margin Fixed expenses Operating income HighTech Inc. $420,000 84,000 $336,000 294,000 $ 42,000 Oldtime Co. $420,000 252,000 $168,000 126,000 $ 42,000 Required: C. Calculate the amount of operating income (or loss) that you would expect each firm to report in 2020 if sales were to 1. Increase by 20%. 2. Decrease by 20%. d. Using the amounts computed in requirement c, calculate the increase or decrease in the amount of operating income expected in 2020 from the amount reported in 2019. Required A Required B Required C1 Required C2 Required D Required E Required F Required G Required H Required I Using the amounts computed in requirement c, calculate the increase or decrease in the amount of operating income expected in 2020 from the amount reported in 2019. HighTech Inc. OldTime Co. Increase (Decrease) with 20% sales increase Increase (Decrease) with 20% sales decrease Required C2 Required