2520

Explanation

If Kara has worked 3 hours per day for 7 days per week, she has worked 21 hours per week. She did this for 2 weeks, so she has worked 42 hours in the 2 weeks. Since 1 hour is equivalent to 60 minutes so we need to multiply 42 by 60 to get the final answer. \(42 \times 60 = 2520\)

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