The consumption of diesel per hour of a bus varies directly as square of its speed.
The consumption of diesel per hour of a bus varies directly as square of its speed. When the bus is travelling at 70 kmph its consumption is 1 litre per hour. if each litre costs $70 and other expenses per hous is $ 70, then what would be the minimum expenditure required to cover a distance of 700 Km?
Answer/Solution
1400
Steps/Work
70 kmph consumption is 1 lt/hr
so 700 km will take 10 hrs and the consumption is 10 lt for entire distance.
1 lt costs $70
so 10 lt costs $700
extra expenses for 1 hr - $70
10 hrs - $700
total expense - $700 + $700 = $1400
Answer : E
so 700 km will take 10 hrs and the consumption is 10 lt for entire distance.
1 lt costs $70
so 10 lt costs $700
extra expenses for 1 hr - $70
10 hrs - $700
total expense - $700 + $700 = $1400
Answer : E