Question 1037668
<pre>
            RATE       TIME      DISTANCE
A           r          t          2400
B           r+50       t-2        1800
</pre>
That must make sense to you first.


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Continue when that information does make sense.



Travel Rates Rule is RT=D to relate rate, time, distance.
Form this system of equations:
{{{system(rt=2400,(r+50)(t-2)=1800)}}}
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Many algebraic steps needed in solving the system for r and t.
You would make a couple of different substitutions through the process.


Starting with the "1800" equation,
{{{rt+50t-2r-100=1800}}}
Use the first equation of the system to make substituion:
{{{rt+50t-2r-100=1800}}}
{{{2400+50t-2r-100=1800}}}
{{{50t-2r+500=0}}}
{{{highlight_green(25t-r+250=0)}}}
Now you will make another substitution using the "2400" equation either solved for r or solved for t...