Shop Offered 20% offer for every Shirt, Smith bought a shirt at Rs. 560. and What was the shop's original selling Price?  Choose the correct answer.
A) 500 B) 550 C) 600 D) 700 E) 750

Rationale: "sp * ( 80 / 100 ) = 560 sp = 70 * 100 = > cp = 700 answer : d"
Answer: D