Question
A player’s average score in first 10 games was a
certain number. In the next 10 games, his average score was 90, due to which his overall average increased by 10. What was his average in the first 10 games?Solution
Let, average score in first 10 games is x So, (10 × x + 10 × 90)/20 = x + 10 Or, 10x + 900 = 20x + 200 Or, 10x = 700 Or, x = 70
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