Question

if the earth matic mean of x x + 3 / X + 6 / X + 9 – and X + 12 is 10 then X is equals to a 1 b 2 c 64 ​

Answer 1

Step-by-step explanation:

mean of x x+3 x+6 x+9 x+12 is 10

number of terms = 5

so x+x+3+x+6+x+9+x+12 ÷ 5 = 10

so 5x + 30 = 10 ×5

so 5x + 30 = 50

so 5x = 20

or x= 4

I knw it's not in the options

but x is coming as 4

Please check options

the method is correct