Question : The bar graph given here shows the data on the production of cars by three different companies X, Y, and Z over the years.
The average production for 5 years was the maximum for which company/companies?
Option 1: Y and Z
Option 2: Y
Option 3: X and Y
Option 4: X and Z
Correct Answer: X and Z
Solution :
According to the question,
Total production of company X over 5 years = 30 + 45 + 25 + 50 + 40 = 190
Average production over 5 years = $\frac{190}{5}$ = 38 cars
Total production of company Y over 5 years = 25 + 35 + 35 + 40 + 50 = 185
Average production over 5 years = $\frac{185}{5}$ = 37 cars
Total production of company Z over 5 years = 35 + 40 + 45 + 35 + 35 = 190
Average production over 5 years = $\frac{190}{5}$ = 38 cars
∴ The average production for 5 years was the maximum for X and Z companies.
Hence, the correct answer is X and Z.
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