Rs. 700 is divided among A, B, C so that A receives half as much as B and B half as much as C. Then C's share is:  Choose the correct choice from the following answers:
A) rs 200  B) rs 300  C) rs 400  D) rs 500  E) rs 600

Rationale: let c = x . then b = x / 2 and a = x / 4 a : b : c = 1 : 2 : 4 . c ' s share rs . [ ( 4 / 7 ) x 700 ) = 400 answer : c
Answer: C