Question
Nick spent 2 h 50 min to complete his Social Science and Physic assignments. He spent 30 min more on his Social Science assignment than his Physic assignment. How long did he take to complete his Physic assignment?
4 m

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Nick spent 2 h 50 min to complete his Social Science and Physic assignments. He spent 30 min more on his Social Science assignment than his Physic assignment. How long did he take to complete his Physic assignment?