Question

Arlene is testing whether school is more enjoyable when students are making high grades. She asked 100 students if they enjoyed school and whether their GPA was above or

below 3.0. She found that 30 of the 40 students with a GPA above 3.0 reported that they enjoyed school, and 15 of the 60 students with a GPA below 3.0 reported that they
enjoyed school. What is the probability that a student with a GPA below 3.0 does not enjoy school?

Answer 1

25% chance a student with a GPA below 3.0 does not enjoy school

Explanation:

Because we're only talking about students with a GPA below 3.0, we do not need to worry about those with a GPA above 3.0.

15/60 = x/100

cross multiply

1500=60x

1500/60=60x/60

25=x