A car travels a distance of 400 km and consumes x km per litre of fuel. Then the driver gets the car serviced. the same car then travels a distance of 400 km but the fuel consumotion is x+5 per litre. how many litres of fuel was consumed by the car in the total journey

Answers (1)

Answer: Total  Consumption of fuel ,

 

       \ =(400/x)+(400/x+5)\ \Rightarrow 400[1/x +1/x+5]\ \Rightarrow 400[2x+5/x(x+5)]

Litres of petrol 

 

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