how many gallons are left in the tank when the car has traveled the following distance on the highway

Answer 1

it starts off with a full tank = g gallons

it goes m miles max

it gets x mpg with a full tank of g gallons

its max mileage= xg = d = m miles

distance = gallons times mpg

if it goes s miles, then it uses h gallons

s= xh = distance traveled

h=s/x

g=m/x

x =m/g

h = s/(m/g) = gs/m

gallons left = L = g-h = m/x - gs/m = (m-gsx)/mx

assuming no algebraic mistakes above,

but it's much easier to check the answer with some

more specific information, such as specific values for g, h, m and x

in order to solve for L