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28 June, 19:35

In November Hillary drove 580 miles in her car the car travelled 33.5 miles for each gallon of petrol used

Petrol cost £1.09 per litre

1 gallon = 4.55 litres

Work out the cost of the petrol the car used in November

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  1. 28 June, 21:29
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    T = £85.87

    the cost of the petrol the car used in November is £85.87

    Step-by-step explanation:

    Given;

    In November Hillary drove 580 miles in her car;

    Distance travelled d = 580 miles

    the car travelled 33.5 miles for each gallon of petrol used;

    Fuel consumption rate r = 33.5 miles per gallon

    Number of gallons N consumed by the car is;

    N = distance travelled/fuel consumption rate

    N = d/r = 580/33.5 = 17.3134 gallons

    Given that;

    Petrol cost £1.09 per litre

    Cost per litre c = £1.09

    1 gallon = 4.55 litres

    Converting the amount of fuel used to litres;

    N = 17.3134 gallons * 4.55 litres per gallon

    N = 78.77612 litres

    The total cost T = amount of fuel consumption N * fuel cost per litre c

    T = N * c

    T = 78.77612 litres * £1.09 per litre

    T = £85.87

    the cost of the petrol the car used in November is £85.87
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