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A wall-clock takes 9 seconds in tinging at 9 o'clock. The time, it will take in tinging at 11 o'clock, is = ?
- a)10 seconds
- b)1.80 seconds
- c)11 seconds
- d)11.25 seconds
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
A wall-clock takes 9 seconds in tinging at 9 oclock. The time, it will...
There are 8 intervals in 9 tinging 10 intervals in 11 tinging.
Time duration of 8 intervals = 9 seconds
∴ Required time = Duration of 10 intervals
Time duration of 8 intervals = 9 seconds
∴ Required time = Duration of 10 intervals
Community Answer
A wall-clock takes 9 seconds in tinging at 9 oclock. The time, it will...
Explanation:
Given:
A wall clock takes 9 seconds to tingle at 9 o'clock.
To find:
The time it will take to tingle at 11 o'clock.
Calculation:
- The clock has 12 hours, so every hour is divided into 360/12 = 30 degrees.
- At 9 o'clock, the hour hand is at 270 degrees.
- To find the time it will take to tingle at 11 o'clock, we need to calculate the angle between the hour hand at 9 o'clock (270 degrees) and the hour hand at 11 o'clock.
- At 11 o'clock, the hour hand is at 330 degrees.
- The angle between the hands is 330 - 270 = 60 degrees.
- The time it takes for the clock to tingle is proportional to the angle between the hour and minute hands.
- Therefore, the time it will take to tingle at 11 o'clock is (60/360) * 12 hours = 2 hours.
- Since the clock takes 9 seconds to tingle at 9 o'clock, it will take 9 * 2 = 18 seconds to tingle at 11 o'clock.
Therefore, the correct answer is option D) 11.25 seconds.
Given:
A wall clock takes 9 seconds to tingle at 9 o'clock.
To find:
The time it will take to tingle at 11 o'clock.
Calculation:
- The clock has 12 hours, so every hour is divided into 360/12 = 30 degrees.
- At 9 o'clock, the hour hand is at 270 degrees.
- To find the time it will take to tingle at 11 o'clock, we need to calculate the angle between the hour hand at 9 o'clock (270 degrees) and the hour hand at 11 o'clock.
- At 11 o'clock, the hour hand is at 330 degrees.
- The angle between the hands is 330 - 270 = 60 degrees.
- The time it takes for the clock to tingle is proportional to the angle between the hour and minute hands.
- Therefore, the time it will take to tingle at 11 o'clock is (60/360) * 12 hours = 2 hours.
- Since the clock takes 9 seconds to tingle at 9 o'clock, it will take 9 * 2 = 18 seconds to tingle at 11 o'clock.
Therefore, the correct answer is option D) 11.25 seconds.
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A wall-clock takes 9 seconds in tinging at 9 oclock. The time, it will take in tinging at 11 oclock, is = ?a)10 secondsb)1.80 secondsc)11 secondsd)11.25 secondsCorrect answer is option 'D'. Can you explain this answer?
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