IBPS Government Jobs Exams Numerical Ability Averages

In an examination average marks of a student was 63 per paper. Had he obtained 20 more marks in Geography and 2 more marks in history, his average marks would have 65. How many papers were there in the examination ?
A) 9 B) 10 C) 8 D) 11 E) None of these

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IBPS Other Question

A trader marked the selling price of an article at 10% above the cost price. At the time of selling he allows certain discount and suffers a loss of 1%. He allowed a discount of
A) 10 B) 9 C) 11 D) 10.5 E) None of thses A bought certain quantity of oranges at total cost of Rs. 1200. He sold 1/3rd of those oranges at 20% loss. If A earns an overall profit of 10%. At what percent profit did A sell the rest of the oranges ?
A) 25 B) 22 C) 16 D) 20 E) 15