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1. Experts say that 25% of all serious bicycle accidents involve head injuries and of all such head injuries, 80% are fatal. What percentage of all serious bicycle accidents involve fatal head injuries?
- A. 6%
- B. 6%
- C. 6%
- D. 6%
Answer: Option B
Explanation:
let, Total number of accidents is 100
given, 25% of of serious bicycle accidents involved head injury and 80% head injuries are fatal
So,percentage of serious bicycle accidents involve fatal head injuries = 80% * 25% *100
= (80/100) *(25/100)*100 = 20
ans: 20%
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