Theon's ship can move 15 nautical miles per hour while Yara's ship can move 30 nautical miles per hour. If their destination is 90 nautical miles away, how many hours ahead will Yara be ahead of Theon? Let's think step by step and output the final answer after "####".
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Theon's estimated time of arrival is 90/15 = <<90/15=6>>6 hours.
Yara's estimated time of arrival is 90/30 = <<90/30=3>>3 hours.
Therefore, Yara is ahead by 6 - 3 = <<6-3=3>>3 hours.
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Theon's ship can move 15 nautical miles per hour while Yara's ship can move 30 nautical miles per hour. If their destination is 90 nautical miles away, how many hours ahead will Yara be ahead of Theon?
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