Question

29.
are
locomotive varies as the square of the
speed and is 1000 kg/hour when the
speed is 60 km/hour. If the coal costs
Rate of consumption of coal by a
the railway company 15 paise/kg and
if the
other
expenses
12 rupees/hour, what becomes the
total cost with a speed of 30 km/hour ?
(a) 270 paise/km
(b) 165 paise/km
(c) 49.5 paise/km
(d) None of the above​

Answer 1

locomotive varies square of speed are ....