4..Acontainer is full of 75 litre milk. If 15 litre content of container is replaced by water and the same process is further repeated two times, then find the quantity of milk left in the final solution?

When was the World International Justice Day 2023 observed?
विश्व अंतर्राष्ट्रीय न्याय दिवस 2023 कब मनाया गया?

Q1.If the length and breadth of a rectangle is increased by 20% and 10% respectively, then find the percentage increase in the area of the rectangle?

If pipe A alone and Pipe B alone can fill a tank in 20 min and 30 min respectively nd pipe C alone can empty it in 10 min. If the tank is completely filled, then find the time taken to empty the tank if all the three pipes are opened simultaneously?

Q3. An amount of 4000 rs is invested at 20% per annum for 2 yrs at compound interest compounding half-yearly, then find the total interest amount received after 2 yrs ?