Multiple choice

Tom travels d miles by a car, whose consumption C gallons per hour is directly proportional to the square of the speed of the car. If he travels 80% of the distance at the speed of 40 miles/hour and the remaining at the speed of 20 miles/hour, he consumes 45 gallons of fuel. How much fuel will he consume if Tom travels the whole distance d miles at the speed of 30 miles hour?

  1. 30

  2. 37.5

  3. 50

  4. 60

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer

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