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The fuel cost per hour for running a ship is proportional to the square of the speed generated in…
The fuel cost per hour for running a ship is proportional to the square of the speed generated in knots. The fuel cost is ₹ 75/h at 10 knots and the fixed charges amount to ₹ 1000/h.
(a)
Given that the fuel cost per hour is k times the square of the speed, the ship generates in km per hour, then what is the value of ‘k’?
(b)
What will be the cost per unit distance?
(c)
Determine the most economical speed to run the ship.
Answer
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From ISC 2025 Practice Mathematics, question 128.