At 6′o a clock ticks 6 times. The time between first and last ticks is 40 seconds. How long does it tick at 12′o clock
Choose the correct choice from the following choices:
A) 47  B) 88  C) 28  D) 66  E) 11
Explanation:   For ticking 6 times, there are 5 intervals.   Each interval has time duration of   40/5= 
<gadget id="calculator">  40/5</gadget>
<output>8</output>
8 secs   At 12 o'clock, there are 11 intervals,   So total time for 11 intervals= 11 × 8 = 88 secs.   Answer: 88
<result>B</result>
At 6′o a clock ticks 6 times. The time between first and last ticks is 40 seconds. How long does it tick at 12′o clock