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:  A) 290 sec  B) 190 sec  C) 199 sec  D) 192 sec  E) 490 sec
Time taken by B run 1000 meters   = (1000 * 10)/20= 
<gadget id="calculator">(1000 * 10)/20</gadget>
<output>500</output>
500 sec.   Time taken by A= 500 - 10= 
<gadget id="calculator">500 - 10</gadget>
<output>490</output>
490 sec.   Answer: 490 sec
<result>E</result>
In a kilometer race, A beats B by 20 meters or 10 seconds. What time does A take to complete the race?