There are one hundred tickets to be sold for a volleyball game. Andrea sold twice as many tickets as Jude while Sandra sold 4 more than half the number of tickets Jude sold. If Jude sold 16 tickets, how many tickets need to be sold?
Andrea sold 16 x 2 = 
<gadget id="calculator">16*2</gadget>
<output>32</output>
32 tickets.
Half the number of tickets Jude sold is 16/2 = 
<gadget id="calculator">16/2</gadget>
<output>8</output>
8.
So, Sandra sold 8 + 4 = 
<gadget id="calculator">8+4</gadget>
<output>12</output>
12 tickets.
Thus, Andrea, Jude, and Sandra sold a total of 32 + 16 + 12 = 
<gadget id="calculator">32+16+12</gadget>
<output>60</output>
60 tickets.
Therefore, 100 - 60 = 
<gadget id="calculator">100-60</gadget>
<output>40</output>
40 tickets need to be sold.

<result>40</result>