Question
On selling 50 articles for Rs. 4000 there is a loss
equal to the cost price of 10 articles. Find the selling price of 25 articles if the shopkeeper wants to earn a profit of 20%.Solution
ATQ Loss on selling 50 articles = Cost price of 50 articles – selling price of 50 articles. Or, Cost price of 10 articles = Cost price of 50 articles – selling price of 50 articles Or, Selling price of 50 articles = Cost price of 40 articles Cost price of each article = 4000/40 = Rs. 100 Cost price of 25 articles = 25 × 100 = Rs. 2500 Selling price of 25 articles = 1.20 × 2500 = Rs.3000
Find the value of 'a' in the given data if the mean of the given data is 20.
10, 15, 18, 22, 24, 19, 21, a, 16, 25
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