1 Portland and Hadley operate in the same industry. Portland's sales, variable c fixed costs are $1,000,000, $700,000, and $100,000, respectively. Hadley's sales, variable c fixed costs are $1,000,000, $400,000, and $400,000, respectively. If each company experien equal increase or decrease in sales, Hadley's income will: Go up or down half as much as Portland's Go up twice as much as Portland's, but go down only half as much as Portland's Go up or down twice as much as Portland's Go up or down by the same amount as Portland's because both companies have equ