Martin uses 3/5 yard of fabric to make 1 backpack. How many backpacks can Martin make if he has a total of 9 yards of fabric?

1 answer

Martin can make 1 backpack with 3/5 yard of fabric.
Therefore, with 9 yards of fabric, he can make 9/(3/5) = <<9/(3/5)=15>>15 backpacks. Answer: \boxed{15}.