a , b and c have rs . 350 between them , a and c together have rs . 200 and b and c rs . 350 . how much does c have ?
"a + b + c = 350 a + c = 200 b + c = 350 - - - - - - - - - - - - - - a + b + 2 c = 550 a + b + c = 350 - - - - - - - - - - - - - - - - c = 200 answer : a"
subtract(add(200, 350), 350)