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?

Created: 6 years ago | Updated: 1 year ago

Updated: 1 year ago

20%

55%

105%

Jamuna Bank Ltd Jamuna Bank Ltd - Officer - 2004 গণিত শতকরা (Percentage)

ব্যাখ্যা

503

Best Ans:

According to the question, 25% of all serious bicycle accidents involve head injuries.

That means, out of every 100 serious bicycle accidents, 25 involve head injuries.

80% of those 25 are fatal.

80% of 25 = $\frac{80}{100}$ x 25 = 20.

So out of 100 serious bicycle accidents, 20 of them involve fatal head injuries.

So the answer is 20%

1 year ago

0 0

Fahim Sarwar

শতকরা (Percentage)