A publishing company plans to replace its four proofreaders, who look for errors in manuscripts, with a new scanning machine and one proofreader in case the machine breaks down. Currently the proofreaders check 15 manuscripts every week between them. Each is paid :80,000 per year. Hiring the new scanning machine will cost :5,000 each calendar month. How will this new system affect the proofreading department’s productivity? (Proofreaders work 45 weeks per year.)