A list of 7 distinct numbers is arranged in ascending order. The median of the list is 15. If the average of the first 3 numbers is 10 and the average of the last 3 numbers is 20, what is the sum of all 7 numbers in the list?
✓ Correct Answer: Option C
The median of 7 numbers is the 4th number, which is 15. Sum of first 3 numbers = 3 * 10 = 30. Sum of last 3 numbers = 3 * 20 = 60. Total sum = 30 + 15 + 60 = 95.