Question

3/8 of the cast in a musical have to sing what fraction of the cast does not have to sing

Answer 1

so 100% of the cast is 8/8 right? so you would subtract 8/8-3= 5/8 

so, 5/8 of the cast does not have to sing

Answer 2

The answer is simply 5/8. 5/8 of the cast does not have to sing.