A can give B 300 meters start and C 600 meters start in a kilometer race. How much start can B give C in a kilometer race?
Options.
A) 111.12 B) 111.67 C) 428.57 D) 111.11 E) 101.12

Rationale: "a runs 1000 m while b runs 700 m and c runs 400 m . the number of meters that c runs when b runs 1000 m , = ( 1000 * 400 ) / 700 = 571.43 m . b can give c = 1000 - 571.43 = 428.57 m . answer : c"
Answer: C