When information is spread, it happens in two ways: Using social media, information is spread proportionally to the number of people not having the information at the time. Using word of mouth, information is spread proportionally to the number of people who know the information and those who don't. In two football stadiums, each with 60,000 fans, a popular player is injured and will not play anymore. In one stadium, news of his unavailability spreads by word of mouth. In the second stadium, that information is put out on social media. In both stadiums, 1,000 fans know the news initially and 5 minutes later, 10,000 fans know the news. How long will it take for half the fans in each stadium to know the news?