Answer:
The total students appearing in first audition = 72
Step-by-step explanation:
As given in the question:
1 out of 3 students were asked to come for second audition.
Let us assume the TOTAL STUDENT who came to first audition = m
So, [tex](\frac{1}{3}) m[/tex] appeared for the SECOND ROUND.
Now, 75% of students appearing in second audition were offered parts.
Calculating 75% of [tex](\frac{1}{3}) m[/tex]
[tex]\frac{75}{100} \times\frac{1}{3} m = 0.25 m[/tex]
Also, as said 18 students were offered parts.
⇒ 0. 25 m = 18
Now, solving for m, we get:
m = 18/0.25 = 72
or, m = 72
Hence, the total students appearing in first audition = 72