Henry Ford's Model T was originally

designed and built to run on ethanol. Today,

ethanol (190-proof alcohol) can be produced with

domestic stills for about $0.85 per gallon. When

blended with gasoline costing $4.00 per gallon, a

20% ethanol and 80% gasoline mixture costs $3.37 per

gallon. Assume fuel consumption at 25 mpg and engine

performance in general are not adversely affected with

this 20-80 blend (called E20). (1.3)

a. How much money can be saved for 15,000 miles of

driving per year?

b. How much gasoline per year is being converted if

one million people use the E20 fuel?