<em>90</em> and all of its multiples are.
Accounting is an action of financial accounts, the target audience is people who want to major in business/accounting.
We use a system of equations to solve this. Since tri city sells 4 times it becomes 4x and solly company is x. Then we do 4x-x=96. 3x=96. x=32. We are not finished yet. We still have to multiply x by 4. x=128. Tri City sold 128 dishwashers.