Question 1077598
The time for Peter to do the raking job himself, p.


Rate for Peter, {{{1/p}}}.


{{{1/45+1/p=1/((1/3)p)}}}------The literal translation of the description


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{{{1/45+1/p=3/p}}}

Multiply both sides by 45p.


{{{p+45=45*3}}}

{{{p=45*2}}}

{{{highlight(p=90)}}}------MINUTES