Question

Jan won 51.9% of the votes in the race for school secretary. She received 415 votes. About how many students are in the school?

Answer 1

mental way:
415 / 51.9 * 100 = 800 students in the school.

detailed way:
x is the amount of students in the school.
51.9% * x = 415
(divide both sides by 51.9% (or 0.519))
x = 800 students