If the average of five numbers is 20, what is their total sum? (2023)

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Question: If the average of five numbers is 20, what is their total sum? (2023)

Options:

Correct Answer: 80

Exam Year: 2023

Solution:

Average = Total Sum / Number of Items. Therefore, Total Sum = Average × Number of Items = 20 × 5 = 100.

If the average of five numbers is 20, what is their total sum? (2023)

If the average of five numbers is 20, what is their total sum? (2023)

Step 1: Understand what average means. The average is the total sum of numbers divided by how many numbers there are.
Step 2: Identify the average given in the question. Here, the average is 20.
Step 3: Count how many numbers there are. In this case, there are 5 numbers.
Step 4: Use the formula for average: Average = Total Sum / Number of Items.
Step 5: Rearrange the formula to find the Total Sum: Total Sum = Average × Number of Items.
Step 6: Plug in the values: Total Sum = 20 (average) × 5 (number of items).
Step 7: Calculate the Total Sum: 20 × 5 = 100.

Average Calculation – Understanding the relationship between average, total sum, and the number of items.
Basic Arithmetic – Applying multiplication to find the total sum from the average.