(ratio and proportion) four out of 5 students who took an entrance examination got passing marks. On the same trend, if 252 students got passing marks, how many students took the examination? and also is it direct proportion or inverse?

Respuesta :

Answer:

To find the total number of students who took the examination, you can set up a proportion:

\( \frac{4}{5} = \frac{252}{x} \), where \( x \) is the total number of students.

Cross-multiply to solve for \( x \): \( 4x = 5 \times 252 \)

Now, divide both sides by 4 to find \( x \).

As for the type of proportion, it is direct proportion because as the number of students taking the examination increases, the number of students passing also increases proportionally.

252/4 = 63
63 x 5 = 315
315 students took the exam, this can be proved by simplifying 252/315, which comes to 4/5.
The proportion is direct