Question
When 10 litres of water is added to a mixture of milk
and water, the ratio of quantity of milk and water becomes 4:5. Instead, if 20 litres of water had been added, then the ratio of quantity of milk to that of water would become 3:4. Find the quantity of milk in the initial mixture.Solution
ATQ, Let the quantity of milk in the initial mixture be 'x' litres. Since, after the addition of 10 litres of water, the ratio of milk and water becomes 4:5, the quantity of water in the initial mixture will be (5/4)×x−10 litres. 
Therefore, the quantity of milk in the mixture = x = 120 litres.
P purchased a book from registered store and gets 14% discount while Q purchased the same book from a roadside stall and got 19% discount. If Q paid Rs....
A trader marked an item 60% above its cost price and sold it for Rs. 2400 after offering a 25% discount. What was the cost price ...
A dishonest dealer professes to sell his goods at cost price, but he uses a weight of 600 gm for the kg weight. Find his gain per cent.
A shopkeeper made a profit of 40% by selling an article for Rs. 280. If he had sold it after allowing a discount of 15% on its selling price, then find ...
A person buys 5 tables and 9 chairs for Rs. 15400.He sells tables at 10% profit and chairs at 20% profit. If his total profit on selling all tables and...
A shopkeeper bought article ‘A’ for Rs. ‘x’ and marked it 25% above its cost price and sold it for Rs. 2600. Marked price of article ‘B’ is ...
If an article is marked 60% above the cost price. If discount of x% is given on the marked price of the article then final profit of 12% is obtained. No...
A dealer buys three different fruits A, B & C at the rate of Rs. 50, Rs. 40 and Rs. x per kg respectively. The quantity (by weight) of B bought by him i...
The profit percentage of K and L is same on selling the articles at Rs. 48800 each but K calculates his profit on the selling price while L calculates ...
A fruit seller bought some mangoes. By selling 50% of total mangoes he got a profit of equal to 50% of his overall cost and 80% of remaining mangoes he ...
Relevant for Exams:
