What is the approximate average production of all car types in the year 2018?
Answer: B
In 2018, the production numbers are: A=140, B=180, C=150, D=210, E=230.
Total production in 2018 = 140 + 180 + 150 + 210 + 230 = 910.
Number of car types = 5.
Average = \(\frac{910}{5} = 182\).