An item listed at $$225$ is subject to the discount series $15\%,10\%,5\%.$ Determine the net price.

a$.$ $$157\mathrm{.}50$

b$.$ $$168\mathrm{.}75$

c$.$ $$163\mathrm{.}52$

d$.$ $$172\mathrm{.}13$

Find the single equivalent discount of the trade discount series $20\%,25\%,10\%.$

a$.86\mathrm{.}5\%$

b$.82\%$

c$.55\%$

d$.46\%$

J$.$B$.$ Lincoln, Ltd$.$ produces a DVD player. Fixed costs are $$360000.$The variable cost per unit is $$58,$ and the selling price per unit is $$84.$ Find the contribution rate per unit.

a$.31\%$

b$.69\%$

c$.15\%$

d$.85\%$

A plant produces small TV sets. The plant has a capacity of $24000$ units. Fixed costs are $$320000.$ The selling price is $$128$ per unit, and the variable cost is $$88$ per unit. Find the break$-$even point as a percent of plant capacity.

a$.15\mathrm{.}15\%$

b$.10\mathrm{.}42\%$

c$.21\mathrm{.}33\%$

d$.33\mathrm{.}33\%$

Research on a new product indicates that the product can be sold for $$30$ per unit. Cost analysis provides the following information.

Fixed cost per period $=$$$5640$

Variable cost per unit $=$$$20$

Production capacity per period $=800$ units

What is the cost function?

a$.TC=5640+20x$

b$.TC=5640+800x$

c$.TC=800+20x$

d$.TC=5640+30x$

You have invested $$2500$ in a $30-$day savings certificate paying $4\mathrm{.}15\%$ per annum. Find the amount of the investment at the end of $30$ days.

a$.$ $$2551\mathrm{.}88$

b$.$ $$2508\mathrm{.}53$

c$.$ $$2491\mathrm{.}50$

d$.$ $$2603\mathrm{.}75$