**Source: Magoosh**

Jennifer can buy watches at a price of B dollars per watch, which she marks up by a certain percentage before selling. If she makes a total profit of T by selling N watches, then in terms of B and T and N, what is the percent of the markup from her buy price to her sell price?

A. 100T/(NB)

B. TB/(100N)

C. 100TN/B

D. ((T/N) – B)/(100B)

E. 100(T – NB)/N

The OA is A