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13 Jun 2018, 12:24
Kudos
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
76% (00:53) correct
24%
(01:02)
wrong
based on 222
sessions
History
Date
Time
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Not Attempted Yet
A photocopier can copy r pages per hour. How many pages can it copy in s seconds?
A. \(\frac{rs}{60}\)
B. \(\frac{r}{60s}\)
C. \(\frac{s}{3600r}\)
D. \(\frac{rs}{3600}\)
E. \(3600rs\)
A. \(\frac{rs}{60}\)
B. \(\frac{r}{60s}\)
C. \(\frac{s}{3600r}\)
D. \(\frac{rs}{3600}\)
E. \(3600rs\)
13 Jun 2018, 13:55
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D
r pages/hr * 1 hr/3600 seconds * s seconds
r pages/hr * 1 hr/3600 seconds * s seconds
13 Jun 2018, 18:23
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Bunuel
we know , 1 hr = 60 mins
60 mins = 60*60 s = 3600 seconds
So, In 3600 sec machine produces r copies
in 1 sec machine produces\(\frac{r}{3600}\)copies
in S sec machine produces \(\frac{rs}{3600}\) copies
Thus the best answer is D.
