CSC
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Numerical Ability
Clocks and Calendars
If a clock takes seven seconds to strike seven, how long will it take to strike ten ?
A. 7 seconds
B. 9 seconds
C. 10 seconds
D. None of these
Read Solution (Total 3)
-
- for 7 strikes it have 6 interval so for 1 interval it takes 7/6sec
therefor for 10 strike it require 9 interval so time required=(7/6)*9=10.5sec
- 11 years agoHelpfull: Yes(4) No(1)
- direct proportin 7 sec to 7 so 10 sec to 7
- 12 years agoHelpfull: Yes(1) No(6)
- when it strikes 7 strokes, the first stroke is at 0 sec. that means it takes 7 sec. for 6 strokes
i. e for 1 stroke time taken = 7/6 sec.
when it strikes 10 strokes the time required for 9 strokes = 9 × 7/6 = 63/6 = 10.5 = 10 1/2sec. - 10 years agoHelpfull: Yes(0) No(0)
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