Because they are surveying 200 students, you'll want to divide that 200 by 4. You divide by 4 because then that gives you the amount of 1/4 of 200, which is 50. From there, the problem says that 3/4 people prefer assemblies on Friday. Now that you know 1/4 of 200 is 50, you simply multiply 50 by 3. This created the answer, 150 students.
