1-5. 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 $4.40 per gallon, a 20% ethanol and 80% gasoline mixture costs $3.73 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 18,000 miles of driving per year? b. How much gasoline per year is being conserved if one million people use the E20 fuel?

1-5. 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 $4.40 per gallon, a 20% ethanol and 80% gasoline mixture costs $3.73 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 18,000 miles of driving per year? b. How much gasoline per year is being conserved if one million people use the E20 fuel?

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Description: 1-5. Henry Ford's Model T was originallydesigned and built to run on ethanol. Today,ethanol (190-proof alcohol)-can be produced withdomestic stills for about $0.85 per gallon. When blendedwith gasoline costing $4.40 per gallon, a 20% ethanoland 80%

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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1-5. 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 $4.40 per gallon, a 20% ethanol
and 80% gasoline mixture costs $3.73 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 18,000 miles of
driving per year?
b. How much gasoline per year is being conserved if one
million people use the E20 fuel?
ueral tradeoff's

1-3. A typical discounted price of a AAA battery is
S0.90. It is designed to provide 1.5 volts and 1.0
amps for about an hour. Now we multiply volts and
amps to obtain power of 1.5 watts from the battery. Thus,
it costs $0.90 for 1.5 Wátt-hours of energy. How much
would it cost to deliver one kilowatt-hour? (Think of a
kilowatt-hour of electricity as the power needed to run
your dishwasher one time.) How does this compare with
the cost of energy from your local electric utility at $0.20
per kilowatt-hour? (1.2, 1.3)
the

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Before 1918, approximately 55% of the wolves in a region were male, and 45% were female. However, cattle ranchers in this area have made a determined effort to exterminate wolves. From 1918 to the present, approximately 70% of wolves in the region are male, and 30% are female. Biologists suspect that male wolves are more likely than females to return to an area where the population has been greatly reduced. (Round your answers to three decimal places.) (a) Before 1918, in a random sample of 10 wolves spotted in the region, what is the probability that 7 or more were male? What is the probability that 7 or more were female? What is the probability that fewer than 4 were female? (b) For the period from 1918 to the present, in a random sample of 10 wolves spotted in the region, what is the probability that 7 or more were male? What is the probability that 7 or more were female? What is the probability that fewer than 4 were female?
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Before 1918, approximately 55% of the wolves in a region were male, and 45% were female. However, cattle ranchers in this area have made a determined effort to exterminate wolves. From 1918 to the present, approximately 65% of wolves in the region are male, and 35% are female. Biologists suspect that male wolves are more likely than females to return to an area where the population has been greatly reduced. (Round your answers to three decimal places.) (a) Before 1918, in a random sample of 10 wolves spotted in the region, what is the probability that 7 or more were male? What is the probability that 7 or more were female? What is the probability that fewer than 4 were female? (b) For the period from 1918 to the present, in a random sample of 10 wolves spotted in the region, what is the probability that 7 or more were male? What is the probability that 7 or more were female? What is the probability that fewer than 4 were female?
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