Question
Peter's boxing class usually lasts 1 h 30 min. However, last Sunday, Peter's class lasted 12 min longer than usual. The class started 8 min late. As such, Peter's class ended at 7.21 p.m. instead of the usual time. What time does Peter's boxing class usually start? (Leave your answer in 24-hour clock format.)
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Peter's boxing class usually lasts 1 h 30 min. However, last Sunday, Peter's class lasted 12 min longer than usual. The class started 8 min late. As such, Peter's class ended at 7.21 p.m. instead of the usual time. What time does Peter's boxing class usually start? (Leave your answer in 24-hour clock format.)