According to Bartholomew Cubbins, 20 of his hats had feathers. Twenty of the hats with no feathers were red. 15 were green, and 30 were blue. What is the ratio of hats with feathers to hats with no feathers? (Write as a fraction in lowest terms.)

Answer 1

The number of hats with no feathers is $20+20+15+30 = 85$, so the ratio is $\frac{20}{85}$. This fraction reduces to $\boxed{\frac{4}{17}}.$