Problema Solution
An automobile engine can run on a mixture of gasoline and a substitute fuel. If gas costs $3.45 per gallon and the substitute fuel costs $2 per gallon, what percent of a mixture must be substitute fuel to bring the cost down to $2.58 per gallon?
Answer provided by our tutors
To Find the amount of substitute fuel required, we can use the following equation where 'n' stands for the fraction of the mixture that must be substitute fuel:
n2+(1-n)3.45=1(2.58)
Using Algebrator to solve for 'n', we get:
n=.6
Therefore 60% of the mixture must be substitute fuel.