Question 736834
The rate for the question can be based upon the work rate of 1 man.


If 5 painters need 4 hours to "paint a house", then how much time does 1 painter alone need?  Five times longer!  This means 1 painter needs {{{4*5=20}}} hours to paint a house.


Thinking of "paint a house" as the ONE JOB, one painter functions at the rate of 1 job per 20 hours, or {{{1/20}}} jobs per hour.


Now, these uniform work rate situations are characterised as r*t=j, where r is rate in jobs per hour, t is hours, j is amount of jobs.  When agents operate simultaneously, the rates are additive.


Can you complete the rest of the problem exercise?