Mining Engineering > GATE 2021 > Mine Transportation
Rate of fuel consumption fc (litres per hour) of a truck varies with truck speed x, (kmph) as given below
fc=20+x2/50
The fuel price is Rs. 70 per litre. Other costs amount to Rs. 500 per hour. If the truck travels 100 km from a coal mine to a thermal plant, the speed of the truck, in kmph, that minimizes the total cost is round off to one decimal place
fc=20+x2/50
The fuel price is Rs. 70 per litre. Other costs amount to Rs. 500 per hour. If the truck travels 100 km from a coal mine to a thermal plant, the speed of the truck, in kmph, that minimizes the total cost is round off to one decimal place
Explanation
Correct : 35.0
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