If the average of 6 numbers is 12 and the average of 4 other numbers is 15, what

If the average of 6 numbers is 12 and the average of 4 other numbers is 15, what is the average of all 10 numbers?

If the average of 6 numbers is 12 and the average of 4 other numbers is 15, what is the average of all 10 numbers?

Correct Answer: 13.2

Step 1: Calculate the total of the first 6 numbers. Since the average is 12, multiply 6 by 12. This gives you 72.
Step 2: Calculate the total of the next 4 numbers. Since the average is 15, multiply 4 by 15. This gives you 60.
Step 3: Add the total of the first 6 numbers (72) to the total of the next 4 numbers (60). This gives you a combined total of 132.
Step 4: To find the average of all 10 numbers, divide the combined total (132) by the total number of numbers (10). This gives you 13.2.

Averages – Understanding how to calculate the average of a set of numbers by using the total sum and the count of numbers.
Total Calculation – Calculating the total of a group of numbers based on their average and the number of elements.