for particular car, assume that in the range of 50-90 kilometre per hour the fuel consumption will be directly proportional to the speed of the car. If the car consumes 5 litre of fuel per hour when travelling at 50 kilometre per hour. What will the total quantity of fuel consumed if the car travels at 60 kilometre per hour for 45 minutes followed by 75 kilometre per hour for 30 minutes.
Answers
Answer:
your question directley notice that fuel consumption is 10 percent of speed
Step-by-step explanation:
1 st question ans is 4.5 lt
2 nd questions answered is 3.75 lt
Given : in the range of 50-90 kilometre per hour the fuel consumption will be directly proportional to the speed of the car.
car consumes 5 litre of fuel per hour when travelling at 50 kilometre per hour
To Find : total quantity of fuel consumed if the car travels at 60 kilometre per hour for 45 minutes followed by 75 kilometre per hour for 30 minutes.
Solution:
in the range of 50-90 kilometre per hour the fuel consumption will be directly proportional to the speed of the car
f ∝ s
=> f = ks
car consumes 5 litre of fuel per hour when travelling at 50 kilometre per hour.
=> 5 = k (50)
=> k = 0.1
=> f = 0.1s
fuel consumed if the car travels at 60 kilometre per hour for 45 minutes
f = 0.1 (60) ( 45/60) = 4.5 litre
fuel consumed car travels 75 kilometre per hour for 30 minutes.
f = 0.1 (75)(30/60) = 3.75 litre
Total Fuel consumed = 4.5 + 3.75 = 8.25 Litre
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