Question
The average of the first and second numbers is 20, while
the average of the second and third numbers is 25. If the sum of the first and third numbers is 44, find the first number.Solution
ATQ, Let, the number be a, b, and c respectively. According to the question, a+ b = 100 ... (1) b+ c = 108 ... (2) a + c = 106......(3) solve these equations From equation (1) and (3), Subtract to find c - b = 4 ....(4) b = c - 4 substitute b from (1) and (3) a + c = 44 a = 18
If the selling price and cost price of a book is Rs. 440 and Rs. 320, then find the profit percentage in this transaction.
A retailer added a 25% markup to the cost price of an item and then offered a 10% discount on the marked price before selling it for Rs. 270. Calculate ...
A fruit seller receives 1.12 kg of fruit from the supplier for every 1 kg he pays for, but sells only 0.7 kg of fruit to his customers while charging th...
A smartphone was sold for Rs. 36,300 at a profit of 10%. If the smartphone was instead sold at a loss of 8%, what would have been its selling price?
A and B started a business with investments in the ratio 11:10 respectively. After 10 months, C joined them with an investment 40% more than the investm...
- Two Friends sell an article for Rs. 960, each earning a 25% profit. However, one friend calculates his profit based on the cost price, while the other calc...
A businessman increased the price of an equipment by 70% above the cost and sold it with two successive discounts of 12% and 10%. If the profit earned i...
The cost price of article A and B is Rs. ‘X’ and Rs. (X + 400), respectively. Article A is sold at 20% profit while article B is sold at 10% loss. I...
If the cost price of 120 articles is equal to the selling price of 45 articles, find the profit percent.
A company produces 5,000 units of a product in a month. The fixed cost is Rs 10,000, and the variable cost per unit is Rs 15. If the company sells each ...
Relevant for Exams:
