If a student is selected at random find the probability that the student is a junior round to the nearest whole percent

At school there are 526 students and 263 are girls about how likely is it that a randomly chosen student will be a boy

Ineed to know the answer to this algebra question.

The multiplicative property of equality states that for real numbers a, b, c, and d, if a = b and c = d, then ac = bd. true false