A sunk cost is one that has already been spent has already been contracted for, though not yet spent did not involve cash flow is a foxed cost is a variable cost Mississauga Mining Co. made a net income of $20 million in 2007 after the deduction of amortization expense of $8 milion, interest of $5 million and taxes of $10 million. During 2007, it sold mining equipment for $2 million and bought a new computer system for $3 million. During 2007. at issued new shares for $15 million and used the proceeds to repay loans of $10 million the remainder went into the bank's current account. The change in cash was $21 million increase $25 million increase $5 million decrease $37 million increase $12 million increase