A class starts at 10a.m. and lasts till 1.27p.m. Four periods are held during this interval. After every period, 5mins are given free to the students. What is the eact duration of each period?

Asked by Shikha Vanjani | 26th Jul, 2013, 04:44: PM

Expert Answer:

Total time lapsed between 10 am and 1.27 pm = 3 hours and 27 min = 180 + 27 min = 207 min
 
Let the duration of each period be x min
 
5 min are given free to each student. So, there have been 4 periods held, hence there would be 3 free breaks given
 
4x + 5*3 = 207
4x = 207-15
4x = 192
x = 48 min. 
Hence each period if of 48 min. 

Answered by  | 26th Jul, 2013, 05:30: PM

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