In the first verse, 30 / 2 = <<30/2=15>>15 singers sang.

In the second verse, 15 / 3 = <<15/3=5>>5 singers joined in.

In the final verse, 30 - 15 - 5 = <<30-15-5=10>>10 singers joined for the whole choir to sing together.

# Answer

10
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
A choir was singing a song that involved 30 singers. In the first verse, only half of them sang. In the second verse, a third of the remaining singers joined in. How many people joined in the final third verse that the whole choir sang together?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
10
A choir was singing a song that involved 30 singers. In the first verse, only half of them sang. In the second verse, a third of the remaining singers joined in. How many people joined in the final third verse that the whole choir sang together?
train