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The cost of fuel in running an engine is proportional to the square of speed in km/h and is Rs. 64 per hour when the speed is 16 km/h. Other cost amount is 100 per hour. Find speed which would minimize the cost. |
| Answer» The cost of fuel in running an engine is proportional to the square of speed in km/h and is Rs. 64 per hour when the speed is 16 km/h. Other cost amount is 100 per hour. Find speed which would minimize the cost. | |