Sandy buys an old scooter for $800 and spends $200 on its repairs. If Sandy sells the scooter for $1200, what is the gain percent?	Choose the correct option.
A) 15 %  B) 18 %  C) 20 %  D) 22 %  E) 25 %

Rationale: selling price / total cost = 1200 / 1000 = 1.2 the gain percent is 20 % . the answer is c .
Answer: C