In 2015, the number of graduating seniors taking the ACT exam was 1,924,887. In 2011, a total of 1,612,665 graduating seniors took the exam. By what percent did the number increase over this period of time?
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Ryan has 10 quarters. Kelly has exactly seven times as much money as Ryan. They will combine their money to buy a game. The game costs $27. How much more money do they need to save?