Question

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

Answer:

15

Step-by-step explanation:

ratio of larger rooms to smaller rooms =3:4

let no of larger rooms be x

now,

3/4 = x/20. (by cross multiplication)

60 = 4x

x = 60/4

x = 15

no of larger rooms is 15

Answer 2

Answer:

ans is 15

Step-by-step explanation:

let the no of classes be resp 3x&4x

3x:4x

but 4x = 20

so x = 5

now we will put the value of x in 3x so answer will be 3*5=15