Otobai Company in Osaka, Japan is considering the introduction of an electrically powered motor scooter for city use. The scooter project requires an initial investment of 15 billion. The cost of capital is 10%. The initial investment can be depreciated on a straight-line basis over the 10-year life of the project. Profits are taxed at a rate of 50%.

Consider the following project estimates:

Market size 1.0 million

Market share .1

Unit price 375,000

Unit variable cost 300,000

Fixed cost 3 billion

Otobai is considering still another production method for its electric scooter. It would require an additional investment of 15 billion but would reduce variable costs by 40,000 per unit.

a. What is the NPV of this alternative scheme?

b. What is the break-even quantity?

c. Now go back to the original project shown in the problem table prior to the additional investment. Suppose Otobai's management would like to know the figure for variable cost per unit at which the original electric scooter project would break even. Calculate the level of variable costs at which the project would earn zero profit and at which it would have zero NPV.

d. Calculate DOL based on the alternative scheme used in part a.

Please list detailed steps to determine answer.