Required Mathematical Intelligence

Chapter 141 100-meter sprint

A and B compete in a 100-meter sprint. As a result, A reaches the finish line 10 meters ahead.B competes with C in the 100-meter sprint, and as a result, B wins with a 10-meter lead.Now A and C are in the same race, how many meters will A be ahead?
[Answer: If your answer is "A leads 20 meters to win", then it is wrong.The speed difference between A and B is 20.00%, and the speed difference between B and C is also [-]%, but it cannot be concluded that the speed difference between A and C is [-]%.

If three people race together, when A reaches the finish line, B will be behind A by ten percent of 100 meters, or 10 meters; and C will be behind B by ten percent of 90 meters, or 9 meters.Therefore, if A and C race, A will lead by 19 meters. ]
(End of this chapter)