Question 1168686
Fuel efficiencey in miles per gallon;
Fuel volume in gallons;
Distance in miles.
<pre>
                    FUEL EFFIC.     VOL.          DIST.
FIRSTCAR              35             g            35g
SECCAR                30            55-g          30(55-g)
TOTALS                              55            1775
</pre>
{{{highlight_green(35g+30(55-g)=1775)}}}--------solve for g.



--
--

{{{7g+6(55-g)=355}}}
{{{g+6*55=355}}}
{{{g=355-6*55}}}
{{{highlight(g=25)}}}---------------gallons for the first car


{{{highlight(30)}}}--------------gallons for the second car