In a kilometer race, A beats B by 50 meters or 10 seconds. What time does A take to complete the race?
Answers
A) 50 sec
B) 190 sec
C) 287 sec
D) 74 sec
E) 697 sec

Rationale: "explanation : time taken by b run 1000 meters = ( 1000 * 10 ) / 50 = 200 sec . time taken by a = 200 - 10 = 190 sec . answer b"
Answer: B