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Find the average of the marked price of dining table and book rack.
Rs. 8,500
Rs. 8,000
Rs. 9,000
Rs. 7,500
None of the above
Rs. 8,500
Calculate the difference between the two prices, take half of it, and add to the smaller value (e.g., 7000+210000−7000=7000+1500=8500).
Marked Price of Dining Table = ₹10,000, Marked Price of Book Rack = ₹7,000
Average=Number of Values∑Values
Calculate the difference between the two prices, take half of it, and add to the smaller value (e.g., 7000+210000−7000=7000+1500=8500).
Students often add the marked prices of all five items listed in the table instead of focusing only on the two items requested.
Identify required values
From the provided table, identify the marked price for the Dining Table and the Book Rack.
Dining Table=10000,Book Rack=7000
Sum the prices
Add the two identified marked prices together.
10000+7000=17000
Calculate the average
Divide the sum by the total number of items, which is 2.
217000=8500
A is correct because the average of the marked prices of the dining table and book rack is calculated as (10000 + 7000) / 2 = 8500.
Average calculations are fundamental in Data Interpretation sets; always ensure you carefully read the specific rows or columns requested to avoid common selection errors.
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