Question
The average age of (x + 4) players in a team is 18
years. If a 38 years old coach joins the team, the average increases by 1 year. Find x% of 500.Solution
Total age of players = 18(x + 4)
According to question,
[18(x + 4) + 38] = (18 + 1)(x + 4 + 1)
18x + 72 + 38 = 19x + 95
19x - 18x = 110 - 95
x = 15
So, 15% of 500 = 75
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