Question

A class starts 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 1

(a) Class start at 11:00 am 

Class ends at 02:27 pm
So, duration of class = 3h 27min = 207 min 

There will be 4 periods.
After every period, there will be a 5 min break. Here, only 3 breaks will be taken as there are only 4 periods and end of 4th periodmeansend of the class.4th break is not needed to beconsidered.
So, duration of the periods = 207 – 3×5 = 192 min.

Time assigned to each period = 192/4 =48min.