Direction : Study the following table and answer the questions that follow : Annual expenditure of a company from 2007 to 2011 (₹ in Lakhs)Items of Expenditure →
Year ↓Salary Fuel and Transport Bonus Interest on Loans Tax 2007 288 98 3·00 23·4 83 2008 342 112 2·52 32·5 108 2009 324 101 3·84 41·6 74 2010 336 133 3·68 36·4 88 2011 420 142 3·96 49·4 98
What was the average (mean) amount of interest paid on loans by the company per year during the period from 2007 to 2011 ?
₹ 36·66 lakhs
The mean per year equals the sum of the yearly values divided by the number of years, here five (2007 to 2011). The mean is the single value that, if paid equally every year, would give the same total interest over the five years.
Step 1 — Interest on loans: \(23.4 + 32.5 + 41.6 + 36.4 + 49.4 = 183.3\)
Step 2 — \(\text{Mean} = \frac{183.3}{5} = 36.66\)
39.18, 30.43 and 33.72 lakh do not equal one-fifth of the five-year total, and the exact mean is listed, so “None of the above” is not correct.
₹ 36·66 lakhs option is correct.
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