Question

The average age of a board of 10 advisors of a company is the same as it was 3
years ago, on account of the replacement of one of the older advisors by a
younger man. How much younger is the new man than the director whom he
replaced?​

Answer 1

Answer:

$10x + 10x - 5 = 0 \\ \\ 20x - 5 = 0 \\ \\ 20x = 5 \\ \\ x = \frac{5}{20} \\ \\ x = \frac{1}{4}$

plz mark brainlist dear friend