Christina and Kylie are lifting boxes to put them on shelves. Christina does 200J of work in 5 minutes and Kylie does 200J of work in 4 minutes. What is the difference between the two jobs.

The difference between the two jobs is that Christina did 200J of work in 5 minutes, while Kylie did 200J of work in 4 minutes, meaning that Kylie did her job more quickly than Christina.