John has two open packs of paper. one pack has 31 pieces of paper. the second pack has 45 pieces of paper. how many pieces of paper does john have all together? a) 72 b) 73 c) 74 d) 76

c

step-by-step explanation:

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 %