It takes max three times as long as felix to complete the same job. when the men work together, they can complete the job in 9 hours. how many hours are required for max to do the job alone? enter your answer in the box. __h

The answer is 36h

Let the portion of the job that Felix can complete in one hour=

Let the portion of the job that Max can complete in one hour=

As, rate * time = portion of job done

We can simplify this like:

Portion that Felix can do in 9 hours  + portion that Max can do in 9 hrs  =  1 job done

Hence, Felix can complete the whole job in 12 hours working alone.

Max can alone do the job in 3(12) = 36 hours.

where are the choices?