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After deducting a commission of 10% a TV costs ₹ 18000. What is its gross value?(a) ₹ 18800 (b) ₹ 20000 (c) ₹ 19800 (d) none of these |
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Answer» (b) ₹ 20000 Because, Let the gross value of TV be ₹ x Commission on TV = 10% Price of the TV after deducting the commission = ₹ (x – 10% of x) = (x – ((10/100) × x)) = (x – (x/10)) = (10x – x)/10 = (9x/10) The price of TV after deducting the commission = ₹ 18000 = (9x/10) = 18000 = x = (18000 ×10) / 9 = x = (2000 × 10) = x = ₹ 20000 Let gross value of TV = Xcommission=10% =>Commission=X/10 so cost of TV=X-X/10=18000 =>9X=180000 =>X=20000 (ans) |
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