Question

In a survey of 80 students, 25 said they planned on attending the pep rally. The school has 550 students. Predict the number of students who plan to attend the pep rally.

Answer 1

25 = 31.25% of 80
31.25% of 550 = 171.875…
Since a partial student can't attend, you round up. Likely around 172 students will attend.

Answer 2

80/25= 3.2
550/3.2= 171.875
so, 171.875 students round that up to 172