Gasoline Purchases

60 litres at 51.0 cents per litre

68 litres at 57.5 cents per litre

74 litres at 53.5 cents per litre

58 litres at 58.5 cents per litre

4.On a trip, a motorist purchased gasoline according to the table shown to the right.

(a) What was the average number of litres per purchase?

(b) What was the average cost per litre?

(c) If the motorist averaged 9.17 kilometres per litre, what was the average cost of gasoline per kilometre?