For a while now, I have been stuck on this particular question and I don't know how to start it let alone find the solution to each question. I was just wondering if someone can guide me to the right way to finding each answer to each question.

Rather than posting my whole assignment I will put down just one question in hopes that the formulas will be helpful.

Sales revenue $710,000

Variable costs ?

Fixed costs ?

Operating income $13,800

Units sold 190,000

Contribution margin per unit $1.42

Contribution margin ratio ?

Thanks again for help guys,

Woo