Akhror drove from Tashkent to his country house at an average speed of \(60\text{ km/h}\) and spent \(1.5\) hours on the trip. On the way back, along the same road, he got into traffic and drove at an average speed of \(45\text{ km/h}\). How much time did he spend on the return trip?
The first system administrator services 2 more computers per hour than the second administrator. Together, in 4 hours, they serviced 48 computers. How many computers per hour does each administrator service?
At a factory, two assembly lines produce identical items. The second line assembles 3 more items per hour than the first. In 5 hours of joint work, they assembled 155 items. How many items per hour does each line assemble?
Two teams repair sections of a highway. The first team repairs 10 meters less per day than the second. In 4 days of joint work, they repaired 840 meters of road. What is the daily productivity of each team?
At the port, two cranes of different capacity unload containers. The first crane unloads 5 more containers per hour than the second. In 4 hours of joint work, they unloaded 180 containers. How many containers per hour does each crane unload?