A fruit seller had some oranges. He sells 20% oranges and still has 380 oranges. How many oranges he had originally? Pick.
A) 475 B) 700 C) 220 D) 400 E) none of these

Rationale: explanation : he sells 20 % of oranges and still there are 380 oranges remaining = > 80 % of oranges = 380 ⇒ ( 80 × total oranges ) / 100 = 380 ⇒ total oranges / 100 = 4.75 ⇒ total oranges = 4.75 × 100 = 475 answer : option a
Answer: A