In a kilometer race, A beats B by 20 meters or 10 seconds. What time does A take to complete the race?
Choose the correct choice from the following choices.
A) 290 sec
B) 190 sec
C) 199 sec
D) 192 sec
E) 490 sec

Rationale: "time taken by b run 1000 meters = ( 1000 * 10 ) / 20 = 500 sec . time taken by a = 500 - 10 = 490 sec . answer : e"
Answer: E