I need help with Algebra?

1. Adam made a trip to town hall and back. The trip there took three hours and the trip back took five hours. He averaged 42 mph on the return trip. Find the average speed of the trip there. 2. A passenger train left Miami and traveled east at an average speed of 10km/h. A freight train left nine hours later and traveled in the opposite direction with an average speed of 80km/h. Find the number of hours the freight train needs to travel before the trains are 1080 km apart. 3. Perry drove to a friends house and back. It took 2 hours longer to go there than it did to go back. The average speed on the trip there was 28 mph. How many hours did the trip there take? 4. Data Publishers has two printers. Printer A prints 300 pages per hour, and printer B prints 275 pages per hour. On a job totaling 19,000 pages, how long must printer B run to complete the job if printer A runs for only 12 hours? 5. Joey and Billy are making calenders to sell to e********y for the hockey team. Joey can make 10 calenders per hour. Billy can make 15 calenders per hour. Billy starts making calenders 2 hours after Joey starts making them. If 120 calenders are ordered, how long will each boy have to work?

Asked By: - 1/8/2012
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Answered By: BabaQ - 1/10/2012
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