Problem: A merchant bought some goods at a discount of off the list price. He wants to mark them at such a price that he can give a discount of of the marked price and still make a profit of of the selling price. The per cent of the list price at which he should mark them is:
Answer Choices:
A.
B.
C.
D.
E.
Solution:
Let be the cost, the list price, the selling price and the marked price. .
is the correct choice.