An oil refinery buys 10 barrels at Rs. 36000. There is 10% wastage. If the refinery wants to earn 5% profit then at what price should it sell including 8% tax on selling price? (in Rs. per barrel)

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SSC CGL Tier 2 Quant Previous Paper 9 (Held On: 19 Feb 2018)
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  1. 3674
  2. 3711
  3. 4219
  4. 4536

Answer (Detailed Solution Below)

Option 4 : 4536
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Detailed Solution

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If an oil refinery buys 10 barrels for Rs 36000, then after 10% of the oil is wasted, it is left with only 9 barrels, 

⇒ Apparent cost per barrel = 36000/9 = 4000

The company needs a profit of 5%

⇒ Selling price = {Cost price × (100 + profit %)}/100 = 4200

⇒ Net selling price = Selling price + Tax = 1.08 of selling price = 1.08 × 4200 = Rs. 4536
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