In a kilometer race, A beats B by 50 meters or 5 seconds. What time does A take to complete the race?	Choose the correct option.
A) 199 sec  B) 190 sec  C) 726 sec  D) 90 sec  E) 128 sec
Time taken by B run 1000 meters   = (1000 * 5)/50= 
<gadget id="calculator">(1000 * 5)/50</gadget>
<output>100</output>
100 sec.   Time taken by A= 100 - 10= 
<gadget id="calculator">100 - 10</gadget>
<output>90</output>
90 sec.   Answer: 90 sec
<result>D</result>
In a kilometer race, A beats B by 50 meters or 5 seconds. What time does A take to complete the race?