Question

Please answer this question

Answer 1

let the nos of teachers be x

since this is in direct proportion, which means more the nos of student  more the nos of teachers needed

so the proportion between student an d teachers are

3  : 60  ::  x  :400

3*400  = x *  60  [product of the extreme = [product of the means ]

x  =400 * 3 / 60

x= 20 teachers

ANS    for  400 students there must be 20 teachers

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