In this question, A^B refers to A raised to the power B.`br~`br~ Assume that the rate of
consumption of coal by a locomotive engine varies as the square of its speed and is 1000 kg
per hour when the speed is 60 km per hour, when in motion. If coal costs the railway
company Rs. 15 per 100 kg and if the other expenses of running the train is Rs. 12 per hour,
find a formula for the cost in paise per kilometer when the speed is S km per hour.
a) 7
b) 0
c) 6
d) None of the other 3 choices

• d
  (1200/s)(25s/100)
• 8 years agoHelpfull: Yes(0) No(4)
• Plzz xpln it
• 8 years agoHelpfull: Yes(0) No(1)
• i think
  consumption= a(s^2)
  where a is a constant
  according to given data a=10/36
  formula=(12 +(10(s^2)*15/36/100))*100 paise/hr
  for getting formula in paise per km we need to divide by distance covered in 1hour =s
  formula is=(12 +(10(s^2)*15/36/100))*100/s paise/km
  
• 8 years agoHelpfull: Yes(0) No(0)