If blue ridge railway's fixed costs total $50,000 per month, the variable cost per passenger is $ $10, and tickets sell for $50, what is the contribution margin per unit and contribution margin ratio?

Contribution margin per unit = sales- variable cost
sales are the tickets sold= 50$
variable cost per passenger = 10$
50-10= 40$ of Contribution margin per unit

Contribution margin ratio( of total sales) =
(Contribution margin÷ sales) x 100=
(40/50) x 100
=80%
                                        

$45

Explanation:

A surplus is when income exceeds expenses.

One year has 52 weeks. If one week was unpaid leave, then payments were received for 51 weeks.

Average payments per week = $615

Total earning per week =$615 x 51

=$31,365  

The total expenses for the year were  $31,320. The surplus amount will be income minus expenses

= $31,365 - $31,320

=$45