A collection of books went on sale, and 2/3 of them were sold for $2.25 each. If none of the 40 remaining books were sold, what was the total amount received for the books that were sold?  Options
A) $160 B) $150 C) $280 D) $200 E) $180
If 40 books constitute 1/3rd of the total, then 2/3rd of the total = 80 books   Amount received for sold books = 80 * 2.25= 
<gadget id="calculator">80 * 2.25</gadget>
<output>180</output>
$180   Answer :$180
<result>E</result>
A collection of books went on sale, and 2/3 of them were sold for $2.25 each. If none of the 40 remaining books were sold, what was the total amount received for the books that were sold?