Question
Tommy took 39 min to drive from his house to the factory and 5 h 45 min to deliver goods from the factory to various places. He finished delivering the goods at 21 38. At what time did Tommy leave his house? (Give your answer in 24-hour clock format.)
1 m

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Tommy took 39 min to drive from his house to the factory and 5 h 45 min to deliver goods from the factory to various places. He finished delivering the goods at 21 38. At what time did Tommy leave his house? (Give your answer in 24-hour clock format.)