A container contains 10 litres of water. 4 litres of the water replaced with same amount of acid. After sometimes 4 litres of the solution is replaced with same amount of acid. What is the percentage of acid in the container now?

If the length and breadth of a rectangle are increased by 12 cm and 8 cm respectively, the perimeter is increased by 40 cm what was the area of the rectangle initially?

A received Rs.600 as profit from the total profit of Rs.1250 which he and B earned at the end of one year of the business. If A started the business with an initial investment of Rs.7200 and B joined him after 2 months, then what is the investment of B?

A fruit seller had some oranges and apples. He sold 20% oranges to A, 40% of remaining to B and had 48 oranges left. Similarly, he sold 40% apples to A, 100 apples to B and had 10% apples left. Find the total number of apples and oranges that the shopkeeper had initially.

The selling price of 8 articles is equal to the cost price of 10 articles. What is the percentage profit in selling the articles?

A sum of Rs.2900 amounts to Rs 3422 in 3 years at simple interest. If the interest rates were increased by 3% value what would it amount to in the same period?

Jagan and Josh started running simultaneously towards each other with speeds in the ratio 3:4 if the initial separation between the two is 4.2 km and they meet in 3 minutes, what is the difference between their speeds?

A tank is normally filled in 10 hours but due to leak at bottom it takes 2 hours more. If the tank is full, the leak will empty it in

What is the present age of Simian, who is 9 years elder to Santhi and present age of Prasanth is double of the age of Santhi and average age of all the three persons together at present is 23 years?

Mano and Varthan started a business with an investment of Rs.3200 and Rs.4800 respectively. Mano invested for 40% of the year and Varthan invested for remaining time. In what ratio, Mano and Varthan received profit after one year of partnership?