Problem: A jobber buys an article at " less ". He then wishes to sell the article at a gain of of his cost after allowing a discount on his marked price. At what price, in dollars, should the article be marked?
Answer Choices:
A.
B.
C.
D.
E. none of these
Solution:
The cost of the article is . A gain of of the cost is . The article must, therefore, be sold for (dollars). Let be the marked price, in dollars. , so that the correct answer is .