A certain clock marks every hour by striking a number of times equal to the hour,and the time required for a stroke is exactly equal to the time interval between strokes. At 6:00 the time lapse between the beginning of the first stroke and the end of the last stroke is 11 seconds. at 12:00 ,how many seconds elapse between the beginning of the first stroke and the end of the last stroke? Options
A) A.72
B) B.50
C) C.48
D) D.46
E) E.23
At 6:00 it'll chime 6 times. If we assume that the time taken to chime is x, then time between chimes is also x. So you have 6 chimes, which is 6x and 5 time intervals between chimes. This means that 11x = 11 seconds. Thus x = 1 seconds.   By a similar logic, at 12:00, there are 12 chimes and 11 intervals so the total time is   (12+11)= 
<gadget id="calculator">  (12+11)</gadget>
<output>23</output>
23x= 23 seconds.   Answer E.23
<result>E</result>
A certain clock marks every hour by striking a number of times equal to the hour,and the time required for a stroke is exactly equal to the time interval between strokes. At 6:00 the time lapse between the beginning of the first stroke and the end of the last stroke is 11 seconds. at 12:00 ,how many seconds elapse between the beginning of the first stroke and the end of the last stroke?