Paul bought 100 books from $1250. If he sold 30 % of books to the $10 unit price and the other books in the $15 unit price, then what total profit did he realize?  Options:
A) $100
B) $105
C) $110
D) $120
E) $150
Profit = revenu - cost   Revenu =   (100 books * 30%) * $10 = $300   [100 books * (100% - 30%) * $15 = (100 books * 70%) * $15 = 1050   cost: given in the question: $1250   Profit = $1350 - $1250 = 100$   Correct option: $100) 100$1350 -  1250= 
<gadget id="calculator">1350 -  1250</gadget>
<output>100</output>
100$   Correct option: $100) 100$
<result>A</result>
Paul bought 100 books from $1250. If he sold 30 % of books to the $10 unit price and the other books in the $15 unit price, then what total profit did he realize?