Two employees, work at the same rate, take six hours to stock all the shelves of the store. How long would it take five employees working at this same rate t

Question

After a record number of customers shop at a hardware store, the employees need to restock all the shelves.

Answer 1

The answer is  1 hour  & 20 minutes ( to stock the shelves at the same rate, as the first two did in 6 hours.)

Answer 2

the parameter of interest here is "work-hours"---traditionally, also "man-hours", but that is now out of favor.

 

1 person working for 1 hour does 1 work-hour of work.

 

In the problem, sentence 1 tells us that the two employees did 12 work-hours of work.  Assuming the same efficiency, then the same work can be done by 5 employees as follows:

time = work-hours / # of workers = 12 / 5 = 2.4 hours