In a kilometer race, A beats B by 40 meters or 10 seconds. What time does A take to complete the race? Pick
A) 290 sec  B) 190 sec  C) 199 sec  D) 192 sec  E) 240 sec

Rationale: "time taken by b run 1000 meters = ( 1000 * 10 ) / 40 = 250 sec . time taken by a = 250 - 10 = 240 sec . answer : e"
Answer: E