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colleen colleen
wrote...
Valued Member
Posts: 17077
11 years ago
What is the death rate in Chinese mines, using official figures, in deaths per million tons mined?
China produces about 1,500 million tons of coal annually, and at least 6,000 miners are killed each year. Death rate is:
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Sunshine ☀ ☼

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wrote...
Staff Member
11 years ago
6000 deaths/(1,500 x 106 tons)  = 4 x 10-6 deaths/ ton
 
4 x 10-6 deaths/ ton x (1 x 106) = 4 deaths/million tons
- Master of Science in Biology
- Bachelor of Science
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