Question 895689
ONE person paints walls at the rate of r walls per minute.
If n is how many people, t for time in minutes, j for amount of jobs, then {{{nr*t=j}}}.


{{{9r*32=8}}} and {{{4r*t=6}}}.
Work with them.    TWO variables, two equations.  Solve for r from the first equation and substitute into the second equation and solve for t.