The L.C.M. of two numbers is 36. The numbers are in the ratio 2 : 3. Then sum of the number is:
Options.
A) 28  B) 30  C) 40  D) 53  E) 54

Rationale: "let the numbers be 2 x and 3 x . then , their l . c . m . = 6 x . so , 6 x = 36 or x = 6 . the numbers are 12 and 18 . hence , required sum = ( 12 + 18 ) = 30 . answer : option b"
Answer: B