At 6′o a clock ticks 6 times. The time between first and last ticks is 35 seconds. How long does it tick at 12′o clock
Select: A) 77 B) 76 C) 28 D) 66 E) 11
Explanation:   For ticking 6 times, there are 5 intervals.   Each interval has time duration of   35/5= 
<gadget id="calculator">  35/5</gadget>
<output>7</output>
7 secs   At 12 o'clock, there are 11 intervals,   So total time for 11 intervals= 11 × 7 = 77 secs.   77nswer: 77
<result>A</result>
At 6′o a clock ticks 6 times. The time between first and last ticks is 35 seconds. How long does it tick at 12′o clock