Question 1143252
Mario, {{{1/m}}}

Karlo, {{{1/(m-2)}}}

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One job being done and finished
{{{(1/m)*1+3(1/m+1/(m-2))=1}}}


{{{highlight_green(1/m+3(1/m+1/(m-2))=1)}}}
Solve this for m, the time for Mario to do one job, alone.