The line chart given below shows the monthly petrol consumption (in litres) by 6 different cars CR1, CR2, CR3, CR4, CR5 and CR6.

What is the average monthly consumption (in litres) of petrol per car for these 6 cars?

Correct option is B

Given:
Petrol consumption for 6 different cars from the line chart.
Formula Used:
Average = {Sum of all observations}/{Total number of observations}
Solution:
From the line chart, the sum of petrol consumed by all 6 cars is calculated.
Total consumption = 74 + 96 + 79 + 60 + 76 + 75 =  460 litres
Total number of cars = 6
Average = $$\frac{460}{6}$$​​ = 76.67 litres
Final Answer
So the correct answer is (b)