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alber
The answer is fairly simple. Each week they sing 8 songs, and so in 5 weeks they would sing 8x5 songs (which is 40) in 6 weeks, they would sing 8x6 songs (which is 48) and in 7 weeks 7x8 songs (which is 56)
leahlol1234
5 weeks = 40 

6 weeks = 48

7 weeks = 56
Q&A Education