Hi can sombody pleasee answer these and say what r, n, and y on all the equations are 85 - 7.2r = 25.24

6r - 3 = 10

170 - 4n = 130

4(2+3y) + 10 = 12

r= 8.3

r=2.17

n=10

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 %