Question

in a primary school there shall be 3 teachers to 60 students. if there are 400 students enrolled in the school, how many teachers should be there in the school in the same ratio?​

Answer 1

Your Answer ↓↓↓↓↓.

There should be 3 teacher for 60 students 

then ,

for 1 teacher = 60/3 = 20 students .

then,

For 400 students ,

20 teacher = 400 students .

Answer 2

Answer:

20 Teachers required

Step-by-step explanation:

Here we have been given that for 60 students there are 3 teachers in a primary school and we are asked to calculate the number of teachers required for 400 students.

Now, number of students for 3 teachers = 60

Applying the unitary method we get,

⇒ Number of students for 1 teacher = 60/3

⇒ Number of students for 1 teacher = 20

So, we have the simplified ratio of the number of teachers to the number of students = 1:20.

Now, assuming that the number of teachers required for 400 students is x, we must have the ratio of number of teachers to the number of students in this case, i.e. x:400, equal to 1:20, so we get,

⇒x400=120

Solving for the value of x we get,

⇒x=40020∴x=20

Hence, the number of teachers for 400 enrolled students must be 20 in number.