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1. |
A class start at 11:00 am and lasts till 2:27 pm. Four periods of equal duration are held during this interval. After every period, a rest of 5 minutes is given to the students. The exact duration of each period is: |
A. | 48 minutes |
B. | 50 minutes |
C. | 51 minutes |
D. | 53 minutes |
Answer» B. 50 minutes | |