Respuesta :

We know that

• There are 80 students in the history class.

,

• He needs 25% of the students to pass.

To know the number of students that must pass, we just have to multiply 0.25 with 80 since 0.25 is equivalent to 25%.

[tex]0.25(80)=20[/tex]

Therefore, 20 students must pass.