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Q.

In a class of 300 students, if every student reads 5 newspapers and every newspaper is read by 60 students, then the number of newspapers is:


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a

At least 30

b

At most 20

c

Exactly 25

d

Exactly 20 

answer is C.

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Detailed Solution

Concept- To solve this question, let us assume the total number of newspapers to be “Question Image”. Then, we will need to find out the total number newspapers read by every student and number of readers for each newspaper and equate both of them to form a linear equation of single variable with “Question Image”. Solving for Question Imagewill give us our desired answer.
Given, Total number of students given in theQuestion = 300,
And, every student reads 5 newspapers.
Therefore, Number of Newspapers read by all students = (Total number of students) × (Number of newspapers read by all students)
Question Image.
And, Number of readers for each newspaper = (Total number of newspapers) × (number of readers for each newspaper)
Question ImageSo, from the above two equations, we are getting the total number of newspapers to read which means that the total number of newspapers read by students is equal to the total number of newspapers reading which each paper will get. Accordingly, forming the equation, we get,
Question ImageHence, the correct answer is 3.
 
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