Question
A writer wrote a certain number of pages daily for the
first 20 days. In the next 10 days, he wrote at an average of 54 pages per day. This increased his overall average by 6 pages per day. What was his average for the first 20 days?Solution
Let, average pages per day in first 20 days is x So, (20 × x + 10 × 54)/30 = x + 6 Or, 20x + 540 = 30x + 180 Or, 10x = 360 Or, x = 36
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