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<html><body><h2 id="content-id-4082163795-2"><b>Ratios And Proportion Questions Overview</b></h2><p>Ratios And Proportion Questions have a good weightage in the Selection Post 12th English Exam and the type of question asked in Selection Post 12th English exam is similar to the question mentioned below. It has been solved and explained by KD Live Experts under the guidance of Neetu Mam and they have tried to elaborate the concept used in Ratios And Proportion Questions.</p><h2 id="content-id-6814230759-3"><b>Question On Ratios And Proportion </b></h2>The present ratio of students to teachers at a certain school is 30 to 1. If the student enrollment were to increase by 50 students and the number of teachers were to increase by 5, the ratio of the teachers would then be 25 to 1. What is the present number of teachers?
<div class="row show--dificulty--bar" style="margin-top:8px;"><div class="col-sm-6 show--dificulty--bar" style="display:inline-flex !important;border-right:0.1px solid #eee;"><h3 style="font-size:12px !important;">Difficulty : Easy </h3></div><div class="col-sm-6 show--dificulty--bar" style="display:inline-flex;"><h3 style="font-size:12px !important;"> Average Time : 41 Seconds </h3></div></div><h2 id="content-id-4195832067-4"><b> Ratios And Proportion Questions Options</b></h2><ol><li><p>15</p>
</li><li><p>17</p>
</li><li><p>45</p>
</li><li><p>30</p>
</li></ol> <h2 id="content-id-1238976045-5"><b> Ratios And Proportion Questions Solution</b></h2><p>The correct answer is <strong>option 1</strong> i.e.<strong> 15. </strong></p>

<p dir="auto">Let the present number of teachers = x</p>

<p dir="auto">Present students = 30x</p>

<p dir="auto">After the increase:</p>

<p dir="auto">Students = 30x + 50</p>

<p dir="auto">Teachers = x + 5</p>

<p dir="auto">Given new ratio = 25 : 1</p>

<p dir="auto">⇒ <span class="math-tex">\(30x + 50\over x + 5\)</span> = 25</p>

<p dir="auto">⇒ 30x + 50 = 25x + 125</p>

<p dir="auto">⇒ 5x = 75</p>

<p dir="auto">⇒ x = 15</p>
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The correct answer is option 1 i.e. 15.? - Ratios And Proportion Questions are asked in Selection Post 12th English exams and your question has been explained by experts like Neetu Mam.

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