The fraction of the elapsed time from 11:00 A.M to 3:00 P.M on Wednesday of the same day to the elapsed time from 11:00 A.M on Wednesday to 3:00 P.M on Friday of the same week is 1/13.
What is the meaning of time elapsed between two particular times?
The time-lapse is the time gap that is between the beginning time and the ending time, that is, the time that takes the clock from one point of time to the other one.
How to solve the given question?
In the question, we are asked to find the fraction of (i) and (ii), where,
(i) the elapsed time from 11:00 A.M. to 3:00 P.M. on Wednesday of the same date.
(ii) the elapsed time from 11:00 A.M on Wednesday to 3:00 P.M on Friday of the same week.
We first find (i) and (ii) individually and then the required fraction.
Solving (i):
From 11:00 A.M. to 12:00 P.M. we get 1 hour.
From 12:00 P.M. to 3:00 P.M. we get 3 hours.
Therefore, the total time lapse = 1 + 3 hours = 4 hours.
Solving (ii):
From 11:00 A.M. on Wednesday to 11:00 A.M. on Friday, we get 48 hours (2 days).
Then from 11:00 A.M. on Friday to 3:00 P.M. on Friday, we get 4 hours, similar to (i).
Therefore, the total time lapse = 48 + 4 hours = 52 hours.
Therefore the fraction = (i)/(ii) = 4/52 = 1/13.
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