Answer:
BEP units:          42,017 
BEP dollars: 2,100,850
unit cost at 100,000 units produced: 22.40 dollars
operating profit :    1,656,000 
Explanation:

50 - 2.4 = 47.6 contirbution margin per unit

2,000,000/47.6 = 42.016,80 BEP units
BEP units x sales price = BEP dollars
42,017 x 50 = 2,100,850
(B)
fixed cosy/ units produced = fixed cost per unit
2,000,000/ 100,000 = 20 fixed cost per unit
fixed cost + variable cost = total cost
20 + 2.40 = 22.4
(C)
There are 40% units sold at the preferred customer at cost
So we sale at gain only 60% of the units:
100,000 units x 60% x 50       =  3,000,000
100,000 units x 40% x 22.40  =     896,000
Total revenue                              3,896,000
Cost: 100,000 x 22.40          <u>     (2,240,000)  </u>
operating profit                            1,656,000