In a kilometer race, A beats B by 100 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) 90 sec E) 193 sec
Time taken by B run 1000 meters   = (1000 * 10)/100= 
<gadget id="calculator">(1000 * 10)/100</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 100 meters or 10 seconds. What time does A take to complete the race?