if one - third of one - fourth of a number is 18 , then 3 - tenth of that number is : a . 35	Choose one:
A) 23 B) 87 C) 26 D) 64.8 E) 01

Rationale: explanation : the number is 1 / 3 of 1 / 4 is = 15 then 1 / 3 ã — 1 / 4 = 18 number is 216 then 216 ã — 3 / 10 = 64.8 answer : d
Answer: D