Eight persons D, M, P, B, R, S, T, and N belong to the same family with birth years 1952, 1956, 1962, 1981, 1984, 1987, 2014, and 2017 respectively. Their ages are calculated as on the year 2023. Given the following ages:

- P: 71 years
- R: 67 years
- D: 61 years
- M: 42 years
- S: 39 years
- B: 36 years
- N: 9 years
- T: 6 years

What is the average age of B, D, T, and N?

Question

Eight persons D, M, P, B, R, S, T, and N belong to the same family with birth years 1952, 1956, 1962, 1981, 1984, 1987, 2014, and 2017 respectively. Their ages are calculated as on the year 2023. Given the following ages:

- P: 71 years
- R: 67 years
- D: 61 years
- M: 42 years
- S: 39 years
- B: 36 years
- N: 9 years
- T: 6 years

What is the average age of B, D, T, and N?

Accepted Answer

**Solution:**

1. Identify the ages of the individuals B, D, T, and N from the given data:
   - B = 36 years
   - D = 61 years
   - T = 6 years
   - N = 9 years

2. Calculate the sum of their ages:
   $$36 + 61 + 6 + 9 = 112$$

3. Find the average age by dividing the total by the number of persons (4):
   $$	ext{Average} = \frac{112}{4} = 28 	ext{ years}$$

**Answer:** 28 years

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