A, B and C have Rs.500 between them, A and C together have Rs.200 and B and C Rs.310. How much does C have? Choose the correct choice from the following answers:
A) 50
B) 78
C) 267
D) 29
E) 10

Rationale: "a + b + c = 500 a + c = 200 b + c = 310 - - - - - - - - - - - - - - a + b + 2 c = 510 a + b + c = 500 - - - - - - - - - - - - - - - - c = 10 answer : e"
Answer: E