Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
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?

### Response:
Jude sold 16 tickets, so Andrea sold 16 x 2 = <<16*2=32>>32 tickets.
Jude sold 16 tickets, so Sandra sold 16 / 2 + 4 = <<16/2+4=12>>12 tickets.
Together, they sold 16 + 32 + 12 = <<16+32+12=60>>60 tickets.
So, 100 - 60 = <<100-60=40>>40 tickets need to be sold.
#### 40

