A collection of books went on sale, and 2/3 of them were sold for $3.50 each. If none of the 40 remaining books were sold, what was the total amount received for the books that were sold?
Pick.
A) $180  B) $250  C) $260  D) $280  E) $300
If 40 books constitute 1/3rd of the total, then 2/3rd of the total = 80 books   Amount received for sold books = 80 * 3.5= 
<gadget id="calculator">80 * 3.5</gadget>
<output>280</output>
$280   Answer :$280
<result>D</result>
A collection of books went on sale, and 2/3 of them were sold for $3.50 each. If none of the 40 remaining books were sold, what was the total amount received for the books that were sold?