If x=2y =3z and xyz =36 , what is the value of z?
A
2
B
root 2
C
root 3
D
3
Correct Answer: 2
Here., x = 2y = 3z x = 3z and, 2y = 3z y = 3/2 z xyz = 36 3z× 3/2 z × z = 36 9z3 = 72 z = 2