average marks of a , b , c is 48 . when d joins average becomes 47 . e has 3 more marks than d . average marks of b , c , d , e is 48 . what is the marks of a ?
a + b + c = 144 a + b + c + d = 188 d = 44 e = 47 b + c + d + e = 192 b + c = 101 a = 43 answer : a
subtract(multiply(const_3, 48), subtract(multiply(48, const_4), add(add(subtract(multiply(47, const_4), multiply(const_3, 48)), 3), subtract(multiply(47, const_4), multiply(const_3, 48)))))