National parks to offer free-entry weekends Interior Secretary Ken Salazar has urged everyone to visit the national parks over the weekends of June 20-21, July 18-19, and August 15-16 when admission will be free. Kathy Kupper, spokeswoman for the National Parks Service, said that she couldn't remember the fee having been waived in more than 20 years. Source: Los Angeles Times, June 3, 2009 How will waiving the admission charge influence consumer surplus? 

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Waiving the admission charge for national parks on specific weekends can increase consumer surplus in several ways 1 Increased Accessibility Removing the entry fee makes national parks more accessible ... View the full answer