Question

the mean of 12 numbers is if 2 is added number, what will be the new mean?​

Answer 1

Answer:

12+2=14 complete answer

Answer 2

Answer:

9

Step-by-step explanation:

Solution

Given, there are 12 numbers

Mean = 7.Let their sum be x.

So mean = x/12=7.

If two is added to each number then the sum increases by 12*2 = 24. So,

for finding the new mean we'll divide it by 12

∴ Mean = (x+24)/12⇒

(x/12+24/12)

We know , x/12=7

7+ 2 = 9

So, the required new mean is 9.