Question 1090193
{{{system(20x+15y=2250,x+y=125)}}}


{{{4x+3y=450}}}
{{{4x+3(125-x)=450}}}
{{{4x+375-3x=450}}}
{{{highlight(x=75)}}}-------rate for first mechanic
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{{{highlight(50)}}}--------rate for second mechanic