Question 867495
d is miles, v is gallons of fuel, these may form a constant, a rate, {{{d/v}}}  miles per gallon.   This is a uniform rates arrangement expressable as {{{highlight_green(R*v=d)}}}.


Let x and y be unknown gallons of fuel volume,


Which Car___________Fuel Efficiency________gallons________distance
Car 1__________________25__________________x______________25x
Car 2__________________35__________________y______________35y
Total_____________________________________________________2135


I am wondering if something is missing in the problem description.  The fuel volume used of both cars are unknowns.  Both of their distances separately also unknowns.