A, B and C have Rs.500 between them, A and C together have Rs.200 and B and C Rs.330. How much does C have?	Choose one.
A) 50 B) 78 C) 30 D) 29 E) 27

Rationale: "a + b + c = 500 a + c = 200 b + c = 330 - - - - - - - - - - - - - - a + b + 2 c = 530 a + b + c = 500 - - - - - - - - - - - - - - - - c = 30 answer : c"
Answer: C