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


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