12 machines take 30 hours to print a certain job how long will take 16 machines to print the same job?

12 worker take 4 hours to complete a job.How long would it take 15 workers to complete the job?

Three spraying machines working together can finish painting a house in 60 minutes. How long will it take for 5 machines of the same capacity to do the same job?

A machine takes 5 hours to cutting 120 tools. How many tools will it cut in 20 hours?

A man take 80 days to complete a job. To complete this job, 4 men, 8 women and 4 machines take 5 days. Alternatively, 4 men, 1, women and 2 machines take 10 days to complete the job. Find the time taken by a women to complete the job (in says)

Machine P can print one lakh books in 8 hours, machine Q can print the same number of books in 10 hours while machine R can print the same number of books in 12 hours. All the machines are started at 9 a.m. while machine P is closed at 11 a.m. and the remaining two machines complete the work. Approximately at what time will the work be finished ?

X and Y together can finish a job in 6 days. X can alone do the same job in 12 days. How long will Y alone take to do the same job ?

The time taken by 4 men to complete a job is double the time taken by 5 children to complete the same job. Each man is twice as fast as a woman. How long will 12 men, 10 children and 8 women take to complete a job, given that a child would finish the job in 20 days.