Question

If the mean of the terms 6,8, x,12,16 is 11 then the value of x is
a. 13

b. 12

c. 11

d. 14​

Answer 1

Answer:

a. 13

Step-by-step explanation:

Given that  the mean of the terms 6,8, x,12,16 is 11

It means if we add the numbers 6,8, x,12,16 and divide the sum by total numbers i.e. 5 then the result will be 11.

Hence,

(6+8+x+12+16)/5 = 11

=> 6+8+x+12+16 = 11×5

=> 14 + x + 12 + 16 = 55

=> (14 + 16 + 12) + x = 55

=> 42 + x = 55

=> x = 55 - 42

=> x = 13