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A Clock strikes every hour-once at 1.00, twice at 2.00, and so on. The clock takes 6 seconds to
strike 5.00 and 12 seconds to strike 9.00. the time needed to strike 1.00 is negligible. How long does
the clock need for all its striking in 24hours?
a)168 Seconds
b)178 Seconds
c)188 Seconds
d) 198 Seconds
Read Solution (Total 2)
-
- to cover up 4 intervals=6seconds
1 gap=1.5 sec
2*(1.5+3.0+4.5+6+7.5+9+10.5+12+13.5+15+16.5+0)=198 seconds - 13 years agoHelpfull: Yes(19) No(2)
- In first 1hr it strikes ones even 24th hrs it strikes 24times.in frt strikes it can't takes sec.in sec strikes it takes 1.5sec,3rd strikes it takes 3sec,4th strikes it takes 4.5sec,(add 1.5sec next next upto 24th hours)..finally we add all seconds=198 seconds.
- 13 years agoHelpfull: Yes(2) No(4)
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