Question

A mandatory seatbelt law ends up raising the number of traffic fatalities if it lowers fatalities per accident from 0.10 to 0.07 while raising the number of accidents per period from 35,000 to any more than:_______

Answer 1

Answer: 50,000

Explanation:

The question shows that at the current number of accident per period which is 35,000, 0.1 fatalities are recorded.

If the new seat belt law reduces the fatality rate from 0.1 to 0.07, how many accidents would have to occur for the new law to match the previous fatality rate given the previous number of accidents.

Let the new number of accidents be x;

35,000 * 0.1 = 0.07 * x

3,500 = 0.07x

x = 3,500/0.07

= 50,000

At 50,000 accidents, the new law will cause the same amount of fatalities than before. Anything more than 50,000 would lead to more fatalities than before.