A band estimates that 3/8 of people on its mailing list has seen the band play exactly once,

Question

and that 7/16 of people on its mailing list have seen the band play more than once.  What fraction of people on the band’s mailing list have seen the band play at least once?

Answer 1

we must have fractions with the same denominator, so we will use 16/16 (which is equal to 1)

 

7/16 have seen the band more than once. then, 38 x 7/16 ≅ 17 people

 

16/16 - 7/16 = 9/16 who have seen the band only once; then 38 x 9/16 = 21 people