The L.C.M. of two numbers is 54. The numbers are in the ratio 2 : 3. Then sum of the number is:	Choose the correct answer:
A) 28
B) 32
C) 40
D) 45
E) 54

Rationale: "let the numbers be 2 x and 3 x . then , their l . c . m . = 6 x . so , 6 x = 54 or x = 9 . the numbers are 18 and 27 . hence , required sum = ( 18 + 27 ) = 45 . answer : option d"
Answer: D