If the average of 2x and 4x is 12, then x is equal to-

If the average of 2x and 4x is 12, then x is equal to-

A 1

B 2

C 4

D None of these

Solution

Correct Answer: Option C

here, (2x+4x)/2 = 12
or, 6x/2=12
or, x=4