It takes a printer 212 min to print 24 black-and-white pages and 4 color pages. it takes the same printer 314 min to print 30 black-and-white pages and 6 color pages. let b represent the time in minutes needed to print a black-and-white page and c represent the time in minutes needed to print a color page. it takes a printer 212 min to print 24 black-and-white pages and 4 color pages. it takes the same printer 314 min to print 30 black-and-white pages and 6 color pages. let b represent the time in minutes needed to print a black-and-white page and c represent the time in minutes needed to print a color page. how long does it take the printer to print black