Question 1124176
Fuel efficiency is a separate constant for each car.
MILES per GALLON is the unit for fuel efficiency in the example.


{{{R=D/V}}}, fuel efficincy, distance, volume


You could use two variables, but just one variable is possible and the work may be easier.

<pre>
            FUEL EFFICIENCY         VOLUME          DISTANCE

firstcar       x                       25             25x

secondcar     60-x                     40            40(60-x)

sum           60                                       1875
</pre>


Solve this:  {{{25x+40(60-x)=1875}}}