Instructions
Study the bar diagram and answer these questions.
Question 100
In a year, on average, how many personswere killed in industrial accidents and coal mines together ?
Solution
Average persons were killed in industrial accidents = $$ \frac{1200 + 900 +1100 + 800}{4} $$
                                       = $$ \frac{4000}{4} = 1000 $$
Average persons were killed in coal mines = $$ \frac{300 + 150 + 200 + 200}{4} $$
                                = $$ \frac{850}{4} = 212.5 $$
Total = 1000 + 212.5 = 1212.5
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