The band played 5 + 7 = <<5+7=12>>12 songs in their first two sets.

They have 30 - 12 = <<30-12=18>>18 songs left for the third set, fourth set and encore.

Since they played 2 songs in the encore, they have 18 - 2 = <<18-2=16>>16 songs to play on the third and fourth sets

They will play 16 / 2 = <<16/2=8>>8 songs on average over the third and fourth sets.

# Answer

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The school band has 30 songs in their repertoire. The band played 5 songs in their first set and 7 in their second set. The band will play 2 songs for their encore. Assuming the band plays through their entire repertoire, how many songs will they play on average in the third and fourth sets?
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The school band has 30 songs in their repertoire. The band played 5 songs in their first set and 7 in their second set. The band will play 2 songs for their encore. Assuming the band plays through their entire repertoire, how many songs will they play on average in the third and fourth sets?
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