A, B and C have Rs.1000 between them, A and C together have Rs.700 and B and C Rs.600. How much does C have? Options: A) 100 B) 200 C) 300 D) 400 E) 500

Rationale: "a + b + c = 1000 a + c = 700 b + c = 600 - - - - - - - - - - - - - - a + b + 2 c = 1300 a + b + c = 1000 - - - - - - - - - - - - - - - - c = 300 answer : c"
Answer: C