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A third-grade class begins working on a mathematics project at 9:50 a.m. and stops working on the project at 11:10 a.m. How many minutes did the class work on the project? A. 80 minutes B. 20 minutes C.
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A third-grade class begins working on a mathematics project at 9:50 a.m. and stops working on the project at 11:10 a.m. How many minutes did the class work on the project? A. 80 minutes B. 20 minutes C. 60 minutes D. 100 minutes

User Hshah
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20 minutes is your answr
User KarlM
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