Contribution margin / operating income:
HighTech, Inc.: $1,680,000 / $210,000 = 8 times
OldTime Co.: $ 840,000 / $210,000 = 4 times
Expected increase in sales * (contribution margin / operating income):
HighTech, Inc.: 20% * 8 = 160%
OldTime Co.: 20% * 4 = 80%
Results from (g) above * amount of 2015 operating income:
HighTech, Inc.: 160% * $210,000 = $336,000
OldTime Co.: 80% * $210,000 = $168,000