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QUESTION
A police clerk observes that 200 out of 500 motorcycle accidents in recent years led to serious trauma or death and 45 of these involved riders...
A police clerk observes that 200 out of 500 motorcycle accidents in recent years led to serious trauma or death and 45 of these involved riders wearing safety helmets. Of the 300 accidents with minor injuries, 89 of the riders were wearing helmets.
