Question

the ratio of the number of people outside a movie hall to the number of people inside the hall is 3:5.If the total number of seats in the cinema hall is 150.find the number of people who cannot enter the cinema hall because the tickets are sold out​

Answer 1

Ratio=3:5
Let the common ratio be x
So,
No. of people outside movie hall=3x
No. of people inside movie hall=5x
No. of seats=150
Therefore, for the tickets to be sold out, there would have to be 150 people in the movie hall
Therefore,
5x=150
x=30
So, number of people that could not enter the cinema hall were=
3x= 3(30)=
90 people

Answer 2

Step-by-step explanation:

Given Ratio-

3:5

No. of people inside the hall=150

No. of people outside the hall=x

Propotion-

3:5::x:150

Product of means=Product of extremes

5*x =3*150

x =3*150 by 5

x =90