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A teacher has 20 students in her class. If the average height of the students is

Practice Questions

Q1
A teacher has 20 students in her class. If the average height of the students is 150 cm, what is the total height of all students? (2023)
  1. 2500 cm
  2. 3000 cm
  3. 3500 cm
  4. 4000 cm

Questions & Step-by-Step Solutions

A teacher has 20 students in her class. If the average height of the students is 150 cm, what is the total height of all students? (2023)
  • Step 1: Identify the average height of the students, which is 150 cm.
  • Step 2: Identify the number of students in the class, which is 20.
  • Step 3: Use the formula for total height: Total height = Average height × Number of students.
  • Step 4: Substitute the values into the formula: Total height = 150 cm × 20.
  • Step 5: Calculate the total height: 150 × 20 = 3000 cm.
  • Average Calculation – Understanding how to calculate total values from averages by multiplying the average by the number of items.
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