Question
Cathy left a library at 15 50 after spending her time there for 4 h 30 min. What time did she arrive at the library? Give your answer in 24-hour clock.
2 m

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Cathy left a library at 15 50 after spending her time there for 4 h 30 min. What time did she arrive at the library? Give your answer in 24-hour clock.