Question

Q16. In a school, the ratio of the number of large classrooms to small classrooms is 3:4. If the number of small rooms is
20, then find the number of large rooms.

Answer 1

3/4= x/20

4x= 3x20

4x= 60

x= 15

so, the number of large classrooms is 15

Answer 2

Answer:

15

Step-by-step explanation:

let the unknown number bex

3:4=x:20

so 4(x)=20

x = 20÷4=5

one part = 5

so parts of large number =3×x

=3×5

=15

number of large numbers are 15