It takes 10 type A machines 3 days to complete a task when they are op

It takes 10 type A machines 3 days to complete a task when they are operated 12 hours a day. How long will it take 8 Type B machines to complete the same task when they are operated 8 hours a day? (1) Type B machines are 20% less efficient than Type A machines (2) Type B machines take 25% (…)