AI,Betty, and Clare split $1000 among them to be invested in different ways. Each begins with a different amount. At the end of one year, they have a total of $1500. Betty and Clare have both doubled their money, where as AI has managed to lose $100. What was AI’s original portion?
(A) $250 (B) $350 (C) $400 (D) $450 (E) $500
ANSWER:C