What profit percent is made by selling an article at a certain price, if by selling at 3/4rd of that price, there would be a loss of 20%? Choices:
A) 20 %
B) 29 %
C) 7 %
D) 27 %
E) 28 %

Rationale: "sp 2 = 3 / 4 sp 1 cp = 100 sp 2 = 80 3 / 4 sp 1 = 80 sp 1 = 107 100 - - - 107 = > 7 % answer : c"
Answer: C