The consumption of diesel per hour of a bus varies directly as square of its speed. When the bus is travelling at 60 kmph its consumption is 1 litre per hour. if each litre costs $60 and other expenses per hous is $ 60, then what would be the minimum expenditure required to cover a distance of 600 Km?  Choose the correct choice from the following options.
A) 120
B) 1250
C) 1200
D) 1100
E) 1150
60 kmph consumption is 1 lt/hr   so 600 km will take 10 hrs and the consumption is 10 lt for entire distance.   1 lt costs $60   so 10 lt costs $600   extra expenses for 1 hr - $60   10 hrs - $600   total expense - $600 + $600 = $1200   Answer : 1200
<result>C</result>
The consumption of diesel per hour of a bus varies directly as square of its speed. When the bus is travelling at 60 kmph its consumption is 1 litre per hour. if each litre costs $60 and other expenses per hous is $ 60, then what would be the minimum expenditure required to cover a distance of 600 Km?