If x=y=2z and xyz = 256 then what is the value of x?

If x=y=2z and xyz = 256 then what is the value of x?

A 12

B 8

C 16

D 6

Solution

Correct Answer: Option B

x=y=2z

x=2z; y = 2z

xyz = 256

=> 2z.2z.z=256

=> 4z³= 256

=> z³= 6⁴

z = 4

x = 2z = 8