A robot can complete 4 tasks in 5/6 hour. Each task takes the same amount of time.
How many tasks can the robot complete in one hour?

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

Suppose a pendulum is l meters long. the time, t,in seconds that it tales to swing back and forth once is given by t=2.01

What is the ratio fraction form of 25: 9