Question 372802
Let {{{d}}} = daily rental fee
Let {{{f}}} = the per mile fee over 150 miles
given:
Person 1: cost of daily rental = {{{5d}}}
Person 2: cost of daily rental = {{{5d}}}
Person 1: per mile fee over 150 miles = {{{(180 - 150)*f = 30f}}}
Person 2: per mile fee over 150 miles = {{{(200 - 150)*f = 50f}}} 
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{{{5d + 30f = 207.5}}}
{{{5d + 50f = 212.5}}}
Multiply both sides of each equation by {{{2}}}
{{{10d + 60f = 415}}}
{{{10d + 100f = 425}}}
Divide both sides of each equation by {{{5}}}
{{{2d + 12f = 83}}}
{{{2d + 20f = 85}}}