Probability based on area

Question

Answer 1

The dimensions of the whole town = 15 by 12, so the area of the whole town is 15*12 = 180

The dimensions of the south side of town are 7 by 15, so the area of the south side, is 7 * 15 = 105

The probability of point being in south side is ratio of south side area/whole town area * 100 %.