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Find some math in grade one.
Solution: ∫ The distance from point P to point A and point B is equal.

Point p is the midpoint of line segment AB.

∫ The numbers corresponding to point A and point B are-1 and 3 respectively.

The number corresponding to point P is (-1+3)/2 = 1.

(2) Solution: Let x minutes, then the number corresponding to p is -x, A is-1-5x, and B is 3-20x.

Then |-x-(-1-5x) | = |-x-(3-20x) |,

X=4/ 15 or x=2/23.

A: In 2/23 or 4/ 15 minutes, the distance from point P to point A and point B is equal.