Question
Ivory started swimming at 09 00. Opal started swimming 8 min later but stopped swimming 7 min earlier than Ivory. Ivory stopped swimming at 11 15. How long did Opal swim? Give your answer in this format. (Eg 1 h 20 min)
2 m

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Ivory started swimming at 09 00. Opal started swimming 8 min later but stopped swimming 7 min earlier than Ivory. Ivory stopped swimming at 11 15. How long did Opal swim? Give your answer in this format. (Eg 1 h 20 min)