A class starts at 10 a.m. and lasts till 1.27 p.m. Four periods are held during this interval. After each period, 5 minutes are given free to the students. The exact duration of each period is:-
A. 42 minutes
B. 48 minutes
C. 51 minutes
D. 53 minutes
A class starts at 10 a.m. and lasts till 1.27 p.m. Four periods are held during this interval. After each period, 5 minutes are given free to the students. The exact duration of each period is:-
A. 42 minutes
B. 48 minutes
C. 51 minutes
D. 53 minutes