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Simplification Test 7
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© examsnet.com
Question : 28
Total: 40
A light was seen at intervals of 13 seconds. It was seen for the first time at 1 hr. 54 minutes 50 seconds am. and the last time at 3 hrs 17 minutes 49 seconds am. How many times was the light seen?
384
378
375
360
Validate
Solution:
(3 hrs. 17 min. 49 sec) - (1 hr. 54 min. 50 sec) = (1 hr. 22 min. 59 sec)
Time interval = 1 hr. 22 min. 59 sec = (3600 + 1320 + 59) sec = 4979 sec
Hence, the number of times light is seen
=
4979
13
+
1
=
383
+
1
=
384
© examsnet.com
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