Stacked white fraction dices and number one red dice on white background

Like rate, time, and distance questions, work word problems are interested in how long it will take individuals, or workers, to complete a project alone or as a group. The idea here is that it takes a worker a certain amount of time to complete a job. If another worker joins his or her efforts, the job will (theoretically) be completed in less time. The rate of the workers, or their ratios of time it takes to complete a job, are added together and set up in a proportion.