77 In winters, a school opens at 10 am. and closes at 3.30 p.m. If the – InterviewSolution

1.	77 In winters, a school opens at 10 am. and closes at 3.30 p.m. If the lunch interval is of30 minutes, find the ratio of lunch interval to total time of the class periods.
Answer» no of school hours =5h30min=330minlunch time is 30minremaining class periods = 300minratio=30/300=1/10 is the answer.

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