Tap A can fill a cistern in 182 hours, while tap B can empty it in 273 hours. In how many hours will the cistern be filled if both A and B are opened together?

The Dandi March, also known as the Salt Satyagraha, was led by which influential leader?

Which act formally granted independence to India, marking the end of British rule?

Who was the key figure in establishing the Indian National Congress?