The mean of 8 numbers is 12. Five of the numbers are 6, 8, 5, 10 and 28. The remaining 3 numbers are each equal to k. Find
(i) The sum of the 8 numbers
(ii) The value of k

(i) 96

(ii) k = 13

Step-by-step explanation:

(i)

numbers averaged x Average of the numbers = Total of all of the numbers

8 x 12 = 96

(ii)

6 + 8 + 5 + 10 + 28 + 3k = 8 x 12

57 + 3k = 96

3k = 39

k = 13

it is x=-4

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 %