Anish wants to cover the floor of the room 900cm long and 300cm wide with square tiles. If each square tile is of side 30 cm then find the number of tiles required to cover the floor of the room.

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 %

yes

step-by-step explanation:

they have to be opposite and reciprocal of eachother.