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Let the cost price of article ‘A’ = Rs. ‘100y’ Then, selling price of the article when it is sold at a profit of 32% = 1.32 × 100y = Rs. ‘132y’ And, selling price of the article when it is sold at a loss of 40% = 0.60 × 100y = Rs. ‘60y’ According to the question, 132y – 60y = 405 Or, y = (405/72) Or, y = 5.625 So, cost price of article ‘A’ = 100 × 5.625 = Rs. 562.5 Therefore, cost price of article ‘B’ = 562.5 + 81 = Rs. 643.5
If O is circumcentre of acute angled triangle ABC, if ∠ BOC = 150˚ then ∠ BAC = ?
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If O is circumcentre of acute angled triangle ABC, if ∠ BAC = 70˚ then ∠ BOC = ?