Question
Ben spent 3 h 45 min to complete his Physic and Chinese assignments. He spent 55 min more on his Physic assignment than his Chinese assignment. How long did he take to complete his Chinese assignment?
4 m

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Ben spent 3 h 45 min to complete his Physic and Chinese assignments. He spent 55 min more on his Physic assignment than his Chinese assignment. How long did he take to complete his Chinese assignment?