Question

The mean of 12 numbers in 24.
if 5 is added in every number, the new mean is :
a) 24
b) 25
c) 29
d) None of these
It's a MCQ Please reply ne Dear Frnds ​

Answer 1

Answer:

I am not sure but i think the answer is c)29.

Hope it helps.

Answer 2

Answer:

the mean of 12 numbers is 24

if 5 is added to every number then the new mean is:

sum of all the numbers / observations ÷ total number of observations = mean

so here sum / 12 = 24

=>sum = 24 × 12

=> sum = 288

so if 5 is added to every number then the sum will be 12 × 5 =60

so now the new sum we got is 60. we will add 60 to 288 = 348

sum we got = 348

total observation is still 12 only.

so new mean = 348 /12 = 29

so the answer is option C 29.

Explanation:

hope you are satisfied with the answer