Solution:
we are given that
Fixed cost=$190,000.
Variable cost = $18.
selling price per book =$34.
(A)
For break even , let the number of books required to sell be x
Then we can write

Hence the number of books required to sell is 11875 for break even.
(B)
For break even , let the number of books required to sell be x
Then we can write

Hence the number of books required to sell is 14375 for break even.
Break even points in dollar is 14375x34=$488750.