Two-third of a positive number and 16/216 of its reciprocal are equal. The number is:  Choose the most appropriate option:	A) 5 / 12	B) 12 / 5	C) 1 / 3	D) 144 / 25	E) 146 / 25

Rationale: let the number be x . then , 2 / 3 x = 16 / 216 * 1 / x x 2 = 16 / 216 * 3 / 2 = 16 / 144 = 1 / 9 x = 1 / 3 answer : c
Answer: C