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Numerical Ability
Clocks and Calendars
Supposing a clock takes 7 seconds to strike 7. How long will it take to strike 10?
Read Solution (Total 5)
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- 10.5 seconds.
The timer will start only at the first strike. So, the first strike really doesnot count. So, in striking 7, the 7 second interval is for the last 6 strikes. Since the strikes are spaced uniformly, it means each 3 strikes take 3.5 seconds.
To strike 10, it needs 1+3+3+3(=10) strikes, which will require 0+3.5+3.5+3.5 = 10.5 seconds. - 12 years agoHelpfull: Yes(33) No(1)
- 10 seconds to strike 10 o'clock
- 12 years agoHelpfull: Yes(1) No(11)
- 10 seconds to strike
- 9 years agoHelpfull: Yes(0) No(3)
- while strackiing 7 o clock it strick 6 more steps and hence 7/6
for stricking 10 there are 9 interval and hence (7/6)*9 = 21/2 - 5 years agoHelpfull: Yes(0) No(0)
- Clearly , seven strikes of a clock have 6 intervalswhile 10 strikes have 9 intervals.
Required time = 7/6*9 = 10.5sec - 5 years agoHelpfull: Yes(0) No(0)
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