2 laserjet and 7 inkjet printers can can complete printing job in 14 days; 3 laserjet and 8 inkjet can complete the same job in 11 days. Then, 8 laserjet and 6 inkjet can do three times the amount of work in

It takes 30 minutes for 5 old newspapers to produce a batch of newspapers. It takes 14 minutes for 4 new printers to produce a batch of newspapers. What is the difference in time between 6 old printers making a batch and 2 new printers making a batch?

Bill needs to make a large number of photocopies. Copier 1 alone can make the copies in 4 hours while copier 2 alone can complete the job in 3 hours. If Bill runs the two photocopiers at once, how long will it take to complete the photocopying job?

Each graduating student receives a program booklet. The printer can print 50 booklets perhour. If the printer needs to print 240 booklets, how many hours will it take to print all thebooklets

A takes three times as long as B and C together to do a job. B takes four times as long as A and C together to do the work. If all the three, working together can complete the job in 24 days, then the number of days. A alone will take to finish the job is

-A 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 them 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 work. Approximately, at what time will the work (to print one-lakh books) be finished?