Local Co$.$ has sales of$$10\mathrm{.}9$million and cost of sales of$$5\mathrm{.}6$million. Its$$selling$,$ general and administrative expenses

are$$$$450,000$and its research and development is$$1\mathrm{.}2$million. It has annual depreciation charges of$$1\mathrm{.}4$million and a tax rate of$25\%.$a$.$ What is$$Local$\text{'}$s gross$$margin$?$b$.$ What is$$Local$\text{'}$s operating$$margin$?$c$.$ What is$$Local$\text{'}$s net profit$$margin$?$a$.$ What is$$Local$\text{'}$s gross$$margin$?$Local$\text{'}$s gross margin isnothing$\%.$