A sun is divided among X, Y and Z in such a way that for each rupee X gets, Y gets 45 paisa and Z gets 50 paisa. If the share of Y is RS. 18, what is the total amount?	Choose the correct choice from the following.
A) 115	B) 116	C) 117	D) 78	E) 119

Rationale: "x : y : z = 100 : 45 : 50 20 : 9 : 10 9 - - - 18 39 - - - ? = > 78 answer : d"
Answer: D