1600-1450 =150 (m)

(b-a)* 100= 150 (m)

B*200=a*300 Solution: b= 1.5a is brought into the above formula: a=3(m/s) then b=4.5(m/s).

Then the whole journey S= 1600+3*400=2800(m)

This must be it. The leak downstairs thinks they are chasing different distances. That is to say, when Xiao Gang caught up with Xiao Ming, Xiao Gang ran 150 meters more than Xiao Ming in this 100 second, so there is a second formula, and the third formula is obtained from the condition of the time from catching up to reaching the finish line.

Think again!