Step 1: The average of the first three numbers is 16, so the sum of these three numbers is 16*3 = 48.

Step 2: The average of the last three numbers is 15, so the sum of these three numbers is 15*3 = 45.

Step 3: The sum of the first and the last number is 13.

Step 4: We know that the first three numbers sum to 48, and the first and last numbers sum to 13. Therefore, the first number is 48 - 13 = 35.

Step 5: We know that the last three numbers sum to 45, and we now know the first number is 35. Therefore, the last number is 45 - 35 = 10.

Question

Step 1: The average of the first three numbers is 16, so the sum of these three numbers is 16*3 = 48.

Step 2: The average of the last three numbers is 15, so the sum of these three numbers is 15*3 = 45.

Step 3: The sum of the first and the last number is 13.

Step 4: We know that the first three numbers sum to 48, and the first and last numbers sum to 13. Therefore, the first number is 48 - 13 = 35.

Step 5: We know that the last three numbers sum to 45, and we now know the first number is 35. Therefore, the last number is 45 - 35 = 10.

Knowee AI · Accepted Answer

Step 1: The average of the first three numbers is 16, so the sum of these three numbers is 16*3 = 48.

Step 2: The average of the last three numbers is 15, so the sum of these three numbers is 15*3 = 45.

Step 3: The sum of the first and the last number is 13.

Step 4: We know that the first three numbers sum to 48, and the first and last numbers sum to 13. Therefore, the first number is 48 - 13 = 35.

Step 5: We know that the last three numbers sum to 45, and we now know the first number is 35. Therefore, the last number is 45 - 35 = 10.

The average of the first three of 4 numbers is 16 and the last 3 are 15. If the sum of the first and the last number is 13. What is the last number?Marks : 1Negative Marks : 0