Question

In a school Auditorium, there are three types of rows arrangement

possible for watching programs: rows of 20 students per row, or rows
of 25 students ver row, or rows of 40 students per row. Find the least
number of students required for any one of these arrangements so
that all the students can be accommodated in each of these
arrangements.

Answer 1

I think

it should be 200 as it's the first common multiple of 20 40 and 25