In a kilometer race, A beats B by 60 meters or 15 seconds. What time does A take to complete the race?  Choose the correct choice from the following answers.
A) 221 B) 235 C) 245 D) 289 E) 260

Rationale: "time taken by b run 1000 meters = ( 1000 * 15 ) / 60 = 250 sec . time taken by a = 250 - 15 = 235 sec . answer : b"
Answer: B