Question
Henry's gym class usually lasts 1 h 30 min. However, last Thursday, Henry's class lasted 6 min longer than usual. The class started 18 min late. As such, Henry's class ended at 6.39 p.m. instead of the usual time. What time does Henry's gym class usually start? (Leave your answer in 24-hour clock format.)
4 m

Click button first when a symbol is required. X

Henry's gym class usually lasts 1 h 30 min. However, last Thursday, Henry's class lasted 6 min longer than usual. The class started 18 min late. As such, Henry's class ended at 6.39 p.m. instead of the usual time. What time does Henry's gym class usually start? (Leave your answer in 24-hour clock format.)