question_answer

A woman sells to the first customer half her stock and half an apple, to the second customer she sells half her remaining stock and half an apple, and so on to the third, and to a fourth customer. She finds that she has now \[15\] apples left. How many apples did she have before she started selling?

A) \[63\]                            

B) \[127\]              

C) \[240\]              

D)        \[289\]