Given :
Average of old car , I = 17 miles per gallon .
Average of new car , F = 28 miles per gallon .
To Find :
How much will she save in a year if she drives 4,500 miles per year and the price of gasoline is $3.50 per gallon .
Solution :
Difference in average of both the cars .
D = F - I = 28 - 17 = 11 miles per gallon .
Money saved in an year is :
[tex]P=\dfrac{4500\times 3.5}{11}\\\\P=\$1431.8[/tex]
Hence , this is the required solution .
