engineering recuitment DDA JE Civil 2023 Mock Test Logical Reasoning Puzzle Quant Based Puzzle

The average age of 13 persons is 45 years. If the average age of the first 7 persons is 35 years, and the average age of the last 7 persons is 55 years, what is the age of the 7th person?

1

38

2

45

3

52

4

56

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