During a long drive, tony counted the number of pickups and sedans he saw driving in the opposite direction. after a while, he noticed that on average there were 5 sedans for every 2 pickups. at this ratio, how many sedans would he have counted if he had passed 18 pickups?

step-by-step explanation:

the true ones are a b and d

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 %