Has anyone done this yet and can screenshot and show their answers?

No sorry. but if you have ro blox. friend me: Anime_reign123

and If you have discord, friend me: Loner.gurl.07#2244

(i think those are my numbers. try it and lemme know if it works!)

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %