Answer: Hello there!
t is the time that it takes to complete a job:
this means that t = job
suppose t is in hours; then 1/t represents the proportion of the job that you can do in one hour.
Example:
you need 7 hours to do your job if you work at a constant rate; the amount of job done per hour is = 1/7, meaning that in one hour you complete a 1/7 of the total job.
