Answer:
Contribution margin ratio = 1 - variable cost ratio
= 25%
(a) 

= 1,400,000


= 25,000
(b) For profit of $42,000,


= 1,568,000


= 28,000
(c) variable cost = sales price × variable cost ratio
= $56 × 75%
= $42
New contribution margin = 
New contribution margin = 
= 0.4
= 40%


= $875,000


= 12,500
If the company's annual profits decrease (the amount of cash they make per year) then that would lead to a decrease in the price of a company's stock.
A=p(1+rt)
A=future value
P=present value
R=interest rate
T=time
If you want to find present value
P=A/(1+rt)
If you want to find interest rate
R=[(A/p)-1]divided by t
Finally if you want to find time
T=[(A/p)-1]divided by r