Proportional Reasoning - 1 | IT

Question 4

In my school, there are 5 teachers and 170 students. The ratio of teachers to students in my school is 5:1705 : 170. Count the number of teachers and students in your school. What is the ratio of teachers to students in your school? Write it below.

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Solution
Understand the Question
  • A ratio compares two quantities of the same kind by division, expressed in the form a:ba : b.
  • The ratio of teachers to students is given by Number of teachers:Number of students\text{Number of teachers} : \text{Number of students}.
  • This is an activity-based question where the counts depend on your specific school. An illustrative example with 2020 teachers and 600600 students is shown below.

Step 1 · Count Teachers and Students

Let the count of teachers and students in the school be:

  • Number of teachers=20\text{Number of teachers} = 20
  • Number of students=600\text{Number of students} = 600Diagram 1

Step 2 · Form and Simplify the Ratio

The ratio of teachers to students is Teachers:Students=20:600\text{Teachers} : \text{Students} = 20 : 600

Dividing both terms by their greatest common factor (2020) 20÷20:600÷20=1:3020 \div 20 : 600 \div 20 = 1 : 30

Answer

1:301 : 30 (Answers may vary depending on the actual count in your school)

Common Mistakes
  • Reversing the Terms: Writing Students:Teachers\text{Students} : \text{Teachers} (30:130 : 1) instead of Teachers:Students\text{Teachers} : \text{Students} (1:301 : 30). Always maintain the exact order asked in the question.
  • Leaving in Unsimplified Form: Writing 20:60020 : 600 without simplifying it to its simplest form (1:301 : 30) by dividing by the greatest common factor.

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Q4

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