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?
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.
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