The average of three numbers is 15. If one of the numbers is 12, what is the average of the other two numbers?

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Q: The average of three numbers is 15. If one of the numbers is 12, what is the average of the other two numbers?

Solution: Total of three numbers = 3 * 15 = 45. Sum of other two numbers = 45 - 12 = 33. Average = 33 / 2 = 16.5.

Steps: 5

Step 1: Understand that the average of three numbers is given as 15.
Step 2: Use the formula for average, which is (Sum of numbers) / (Number of numbers).
Step 3: Since the average is 15 for three numbers, calculate the total sum of the three numbers: 3 * 15 = 45.
Step 4: One of the numbers is given as 12. To find the sum of the other two numbers, subtract 12 from the total sum: 45 - 12 = 33.
Step 5: Now, to find the average of the other two numbers, divide their sum (33) by 2: 33 / 2 = 16.5.