2 minutes because if u take 4 for the amount of time it take sue and tom and divide it by 2 for two people painting than your quotient is going to be 2.
it takes sue Sue 2 minutes to paint a chair by herself.
1-2/3=1/3
1/3^2=1/9
1/9•1/4=1/36
1/36+1/3=13/36
13/36 is your answer

Therefore, the diameter of the circle is about 21.01 in.
Sorry, mate but it cannot be solved. m is a complicated number like

But if you really want the answer, here it is:
m = (5 ± 3

) / 4
If it helps, can you give me the brainliest answer? I need it...
Thank you very much.