Question
In a group of three numbers first is double of second
and half of third. The average of three numbers is 42. Find the difference between the first number and third number?Solution
Let the first number be ‘x’ Second number = x/2 Third number = 2x According to the question, (x+x/2+2x)/3 = 42 (2x+x+4x)/6 = 42 7x = 42 × 6 x = 36 ∴ Required difference = 72 - 36 = 36
A shopkeeper sold an article at marked price and got a profit of 50%. If he had given a discount of 20%, then find his new profit percent.
- A trader purchased a gadget and sold it at a profit of 30%. If he had sold it at a profit of 18%, his profit would have decreased by Rs.180. What was the c...
Amit marked up an article of cost price Rs. 460 by certain percent and then sold it at discount of 20%. He suffered a loss of 7% in the whole transactio...
The average cost price of two items is Rs. 750. The first item is sold at a 15% profit, and the second item is sold at a 20% loss. Given that the combin...
Roshan purchased 100 rolls of paper for Rs. 27 per roll. He spent Rs. 600 on their transportation. He also paid 50 paise per roll for packing of each ro...
The profit earned by selling an article for Rs. 4,800 is 5/8th the loss incurred on selling the same article for Rs. 3,200. Find the selling price of th...
A shopkeeper marked an article P% above its cost price and sold it for Rs. 748.8 after giving a discount of 20%. If the shopkeeper had a loss of 6.4% on...
The cost price of 25 apples is Rs.60. If it is sold at 25% profit, then how many apples will be sold for Rs.42?
A vendor claims to sell sugar at cost price but uses a faulty scale that shows only 900 grams as 1 kg. What is the approximate profit percentage he earns?
A shopkeeper bought two articles for Rs. 500 each. If he sold one of them at 40% profit and the other at 25% loss, then find the difference between the ...
Relevant for Exams:
