Question
Bryan finishes cleaning at half past 9. He cleaned for half an hour. At what time did he start cleaning? Give your answer in number. (Eg 1)
(1) 7 o'clock
(2) 9 o'clock
(3) Half past 4
(4) Half past 6
2 m

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Bryan finishes cleaning at half past 9. He cleaned for half an hour. At what time did he start cleaning? Give your answer in number. (Eg 1)
(1) 7 o'clock
(2) 9 o'clock
(3) Half past 4
(4) Half past 6