Solution: At what speed will the boat run against a current to go a given distance most economically?

(Last Updated On: December 8, 2017)

At what speed will the boat run against a current to go a given distance most economically?

Problem Statement: EE Board October 1992

The cost per hour of running a motor boat is proportional to the cube of the speed. At what speed will the boat run against a current of 8 km/hr in order to go a given distance most economically?

  • A. 10 kph
  • B. 13 kph
  • C. 11 kph
  • D. 12 kph

Problem Answer:

The speed will the boat run against a current of 8 km/hr in order to go a given distance most economically is 12 kph

Solution:

Latest Problem Solving in Differential Calculus (MAXIMA-MINIMA & TIME RATES)

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Solution: At what speed will the boat run against a current to go a given distance most economically?
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