Nation Incorporated sells three products. Last month's results are as follows: $($SEE TABLE BELOW$)$

Total fixed costs are $$100,000$ marketing and $$125,000$ administrative.

Required:$($a$)$ What was the operating profit last month?

$($b$)$ What is Nation's break$-$even sales volume $($at the given mix$)?$

$($c$)$ What is Nation's margin of safety?

P$1$ p$2$ P$3$

Revenues $200,000300,000300,000$

Variable Costs $80,000280,000160,000$