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A certain class, consisting of a lecture and a question-and-answer session, lasted from 2:45 to 4:30 one afternoon. If the lecture lasted from 2:45 to 4:15, then the question-and-answer session was what fraction of the total class time?
A. 1/7
B. 1/6
C. 1/5
D. 1/4
E. 1/3
OA A
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A certain class, consisting of a lecture and a question-and-answer session, lasted from 2:45 to 4:30 one afternoon...
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Solution:AAPL wrote: ↑Wed Nov 04, 2020 10:02 amGMAT Prep
A certain class, consisting of a lecture and a question-and-answer session, lasted from 2:45 to 4:30 one afternoon. If the lecture lasted from 2:45 to 4:15, then the question-and-answer session was what fraction of the total class time?
A. 1/7
B. 1/6
C. 1/5
D. 1/4
E. 1/3
OA A
The total time was 105 minutes, and the lecture was 90 minutes. Thus, the question-and-answer session was 15 minutes, which is 15/105 = 1/7 of the total class time.
Answer: A
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