Question
A writer completed an average of 120 pages per week for the
first 10 weeks. In the next 5 weeks, he completed ‘x’ pages per week, so that his overall average rose to 132 pages per week. Find the value of 'x'.Solution
ATQ,
{120 × 10 + 5 × x}/(10 + 5) = 132
Or, 5x + 1200 = 132 × 15 = 1980
Or, 5x = 780
Or, x = 156
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