A student's cost for last semester at her community college was $ 3000 . she spent $ 480 of that on books. what percent of last semester's college costs was spent on books

Acertain group of women has a 0.640.64% rate of red/green color blindness. if a woman is randomly selected, what is the probability that she does not have red/green color blindness? what is the probability that the woman selected does not have red/green color blindness? nothing (type an integer or a decimal. do not round.)