A, B and C have Rs.400 between them, A and C together have Rs.300 and B and C Rs.150. How much does C have? Choose the correct choice from the following options:
A) 40  B) 50  C) 60  D) 70  E) 100

Rationale: "a + b + c = 400 a + c = 300 b + c = 150 - - - - - - - - - - - - - - a + b + 2 c = 450 a + b + c = 400 - - - - - - - - - - - - - - - - c = 50 answer : b"
Answer: B