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In a school exhibition, hand-made crafts are displayed for sale. Some students are assigned the work of selling crafts. The overall profit p depends on the number of students x selling the crafts on that particular day and is given by the equation p = 250x  5x2. The school manager claims to have made a maximum profit. Find the number of students engaged in selling the crafts and the maximum profit made.

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Important Questions on Quantitative Skills

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A person purchased a smartphone for Rs. 8,000 and sold it at a profit of 25%. From that amount, he purchased another phone and sold it at a loss of 20%. What is his overall profit or loss?
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A shopkeeper claims a loss of 4% on his goods, but uses weight equal to 840 gm instead of 1 kg. The shopkeeper actually makes a:
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A product priced at Rs. 1000 would earn a shopkeeper a profit of 15%. Find the profit percentage earned by him if he decides to sell the product at a discount of Rs. 50 during the festivals.
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On selling 630 pens, a shopkeeper makes a profit equal to the selling price of 90 pens. Find the approximate profit percentage.
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The capital of a company, Estyle, is made of 75,000 preferred shares with a dividend of 15% and 20,000 common shares, with the par value of each type of share as Rs. 10. The total profit of Estyle wasRs. 2,40,000 of which Rs. 40,000 was kept in a reserve fund. The remaining profit was distributed to the shareholders. What would be the difference in the dividend percentage given to the common shareholders if the amount kept away in the reserve fund was reduced to Rs. 25,000?
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Yalda sold two MP3 players using two different online sites. She sold one for Rs. 1,710 at a loss of 5% and the other for Rs. 2,520 at a profit of 20%. What is her total profit or loss percentage?
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Satish works on 15% commission on the total cost of the book sets he sells. He sold 10 book sets at Rs. 850 each, 5 at Rs. 750 each, and 10 at Rs. 700 each. How much more commission would he have made had he sold all the book sets at Rs. 850 each?
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The ratio of the cost price to the selling price of an item is 4 : 5. The item is sold at a profit of Rs. 500. What is the selling price of the item?