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Mathematical equation and application equation of senior high school entrance examination
Solution: let a speed be X km/h and b speed be Y km/h, then

2.5x+ 1.6y=36

Because they walked 36km at the same time when they met, 1.6y/x=2.5x/y, that is, 16y 2 = 25x 2, so 4y=5x.

Two types at the same time, x=8, y= 10.

So the speed A is 8 km/h and the speed B is 10 km/h. 。