Question
A class has 28 students, including 8 girls and the
…… boys. If …… girls leave the class, the probability of randomly selecting a boy becomes 5/6. Which of the following satisfies the two blanks given in the question? I) 20, 4 II) 20, 3 III) 20, 2Solution
Let the number of girls left be x, Total students = 28 The number of girls = 8 Then, the number of boys = 20 -Constable/1731042428-201.JPG)
20 /(28 – x) = 5/6 28 – x = 24 x = 4
An article with cost price of Rs. 1800 is marked 44% above its cost price and sold after two successive discounts of 20% and Rs. ‘X’ respectively su...
A shopkeeper bought a mobile phone for Rs. 18,500 and sold it for Rs. 21,275. What percentage of profit did he earn in this transaction?
A shopkeeper marked an article Rs. 600 above its cost price and sold it after giving a discount of 20% and earned a profit of 30%. Find the cost price o...
- The cost price of a product is Rs. 400. The shopkeeper marks it 25% above the cost price and then offers a discount of 10%. Calculate the overall gain or l...
Gita purchased 4 mobiles, 16 watches, and 8 tablets for Rs. 320, Rs. 960, and Rs. 480, respectively, from a seller. By selling each mobile and each watc...
Select the options that correctly indicate a 25% profit and a 15% loss
An item costs ₹2,000 less than ₹5,000. The dealer offers a discount of 10% and the retailer further offers a discount of 5% on its CP. The final SP ...
An item marked at Rs. 1,500 is sold for Rs. 1,020 after two successive discounts of 15% and Y%. If a gadget with a cost price of Rs. 6,000 is sold at a ...
- Priya bought a painting for Rs. 32,000 and sold it for Rs. 36,800. What was her profit percentage?
A vendor priced an item 25% higher than its cost price. During the sale of the pen drives, if the seller enhances the discount from 15% to 20%, the prof...
