The area of 1 and APQ is equal to the sum of the areas of two right-angled triangles divided by the x axis, that is, 3/5 * t * 4/5 * t *1/2+3/5 * (10-2t) * 4/5 * (10 (Check three strands, four mysterious five, BC=5)

T value range: 5/2

The coordinates of point D are wrong, or the map is wrong.