You first have to add the total number of pedestrian deaths
[tex]52+252+86+587=977[/tex]
You then have to find the number of civilians that were intoxicated when they died
[tex]52+252=304[/tex]
Divide that number by the total number of pedestrian deaths
[tex]=304/977\\\\=0.3111566018\\\\=0.3112[/tex]
