Question
Wesley's gym class usually lasts 1 h 30 min. However, last Wednesday, Wesley's class lasted 9 min longer than usual. The class started 11 min late. As such, Wesley's class ended at 4.21 p.m. instead of the usual time. What time does Wesley's gym class usually start? (Leave your answer in 24-hour clock format.)
4 m

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Wesley's gym class usually lasts 1 h 30 min. However, last Wednesday, Wesley's class lasted 9 min longer than usual. The class started 11 min late. As such, Wesley's class ended at 4.21 p.m. instead of the usual time. What time does Wesley's gym class usually start? (Leave your answer in 24-hour clock format.)