IN THE 2000s Brazil’s economy was taking off. It barely faltered during the global economic crisis; in 2010 it grew by 7.5%. Yet recently it has stalled. Since 2011 Brazil has managed just 2% annual growth. Its citizens are disgruntled - in June they took to the streets to protest against high living costs, poor public services and the greed and corruption of politicians. Can Dilma Rousseff, Brazil’s president, restart the engines? Will the World Cup and the Olympic games aid Brazil’s recovery, or simply bring more debt?

On Friday September 27th Helen Joyce, The Economist’s Brazil correspondent and author of our special report on Brazil, will answer your questions on Twitter. Starting at 4pm in London and 11am in New York, the discussion will appear in the space below, and on Twitter via @econdiscuss. If you have a Twitter account you can pose a question now for Ms Joyce to answer later. Just remember to add the hashtag #askeconomist to make sure your question reaches us.