A can give B 50 meters start and C 100 meters start in a kilometer race. How much start can B give C in a kilometer race? Select.
A) 111.12
B) 111.67
C) 111.64
D) 52.63
E) 101.12

Rationale: "a runs 1000 m while b runs 950 m and c runs 900 m . the number of meters that c runs when b runs 1000 m , = ( 1000 * 900 ) / 950 = 947.37 m . b can give c = 1000 - 947.37 = 52.63 m . answer : d"
Answer: D