Question

On a trip , a motorist purchased gasoline as follows : 56 litres at $0.99 per litre;64 litres at $1.065 per litre at $1.015 per litre;70 litres at $1.015 per litre ; and 54 litres at $1.045 per litre

What was the average number of litres per purchase
What was the average cost per litre
If the motorist averaged 8.75 km per litre what was the average cost of gasoline per kilometre

Answer 1

Answer: To calculate the average number of litres per purchase, we need to add the total number of litres purchased and divide by the number of purchases:

Total litres = 56 + 64 + 70 + 54 = 244

Number of purchases = 4

Average number of litres per purchase = 244 / 4 = 61

So the average number of litres per purchase is 61 litres.

To calculate the average cost per litre, we need to add the total cost of the gasoline and divide by the total number of litres purchased:

Total cost = (56 x $0.99) + (64 x $1.065) + (70 x $1.015) + (54 x $1.045)

Total cost = $55.44 + $67.36 + $71.05 + $57.63 = $251.48

Average cost per litre = $251.48 / 244

Average cost per litre = $1.03

To calculate the average cost of gasoline per kilometer, we need to divide the average cost per liter by the average distance per liter in km:

Average cost per kilometre = $1.03 / 8.75

Average cost per kilometre = $0.118

So, the average cost of gasoline per kilometer is $0.118.

Explanation: