a/b =6, b/x =36, and a=36, what is the value of 1/x ?

Question

(A) 1/2
(B) 2
(C) 3/2
(D) 4
(E) 6

i got e

Answer 1

a/x = (b/x)(a/b)
so,
36/x = 36*6
1/x = 6

Answer 2

I got a) 1/6