Question

In a school ratio of the number of large class room to small classrooms is 3:4. If the number of small room is 20, then find the number of large rooms.​

Answer 1

20=3x+4x

thanks hope this will help you

Answer 2

Step-by-step explanation:

Let the number of large classrooms = 3x

Number of small classrooms = 4x

Given that number of small classrooms = 20

⟹4x=20⟹x=

4

20

=

4÷4

20÷4

=5

∴x=5

Number of large classrooms = 3×5=15