How many kilograms of rice costing Rs.60 per kg must be mixed with 24 kg of rice costing Rs.42 per kg so that there may be a gain of 12% by selling th...

Vessel A contains milk and water in the ratio $4 : 5$. Vessel B contains milk and water in the ratio...

80 litres of a mixture of spirit and water in the ratio $7:9$ is present in a container A. 20 litres...

If 80 liters of milk solution contains 60\% milk, how many liters of pure milk should be added to ma...

40 litres of milk are kept in a container. 4 litres of milk were removed from this container and rep...

On a $2200 \text{ m}$ long circular track, Sarita and Kavita start from the same point but in opposi...

Find the **simple interest** (in ₹) on ₹2000 at an interest rate of 6.5\% per annum for the period f...