X and Y run a 50 m race,where X beats Y by 5 m. To do a favor to Y, X starts 5 m behind the starting line in a second 50 m race. Both run at the same previous speed. Which of the following is true?
Choose the correct choice from the following answers:	A) X Beats Y by 2m	B) X Beats Y by 0.5 m	C) Y Beats X by 10m	D) Y Beats X by 11m	E) Y Beats X by 11m
Let's suppose that the speed of X is 5m/s and that the speed of Y is 4.5m/s.   So, in the first race, the results are the following:   X crosses the finish line in 10s. In other words, X has run 50 m in 10 s.   In 10s, Y has run 45 meters.   Therefore, there is the difference of 5 meters mentioned in the question.   Now, let's review the second race.   In 11 seconds, X can complete the 50 meters race. We have to remember that X is 5 meters behind the starting line.   But in 11 seconds, Y has covered (45+4.5 )= 
<gadget id="calculator">(45+4.5 )</gadget>
<output>49.5</output>
49.5 meters. Also, it is important to notice that in 11 seconds Y cannot arrive to the finish line.   So, 50- 49.5= 0.5 meter   Answer: X Beats Y by 0.5 m
<result>B</result>
X and Y run a 50 m race,where X beats Y by 5 m. To do a favor to Y, X starts 5 m behind the starting line in a second 50 m race. Both run at the same previous speed. Which of the following is true?