Problema Solution
The ratio of cotton and synthetic in a fiber is 1:4. Find the percentage of cotton.
Answer provided by our tutors
let
c = the amount of cotton in a fiber
s = the amount of synthetic in a fiber
c : s = 1 : 4
s = 4c
the percentage of cotton is:
c/(c + s) = c / (c + 4c) = 1/5 = 0.2 or 20%