Clocks and Calendar - Faulty Clock
Clocks and Calendar - Faulty Clock
Faulty Clock Problems : A clock which gains or looses time as compared to correct clock is known as faulty clock. This happens because of the speed of the hands of the clock. A faulty clock gains or loses some minutes in a definite period of time.
For Example : Consider the case of a watch which gains 3 minutes every 2 hours.
If this watch is set at 8 O'clock, then by the time it is actually 10 o'clock, the watch will show 10 hours 3 minutes.
When the faulty clock shows the time to be 12 o'clock , the actual time will be a few minutes to 12.
Let us try to calculate the actual time in the case.
When the actual time elapsed is 2 hours the faulty clock will show 2 hour and 3 minutes on converting into hours we will divide by 60 mins
So, when the faulty watch shows 12 o'clock (i.e., 4 hours after the watch was set right), the actual time is
That is approx. 11 hours 54 minutes.
Illustration: A watch, which gains 5 seconds every 3 minutes, is set right at 8 : 00 am. In the afternoon same day, when the faulty watch indicates 5:15, the actual time is
A. 55 minutes past 5 B. 5 o'clock C. 60 minutes past 5 D. 58 minutes past 4
Answer: B
Solution: Actual time (t) : seconds
False time (T) = seconds
Watch time : 9 hours 15 minutes = seconds
The time was set at 8:00 am so adding 9 to 8:00 am we will get 5:00pm.
Hence the correct option is B
A watch, which gains 2 seconds every 5 minutes, is set right at 7 : 00 am. In the afternoon same day, when the faulty watch indicates 9:31, the actual time is _________________ | |||
| Right Option : A | |||
| View Explanation | |||
A clock, which gains uniformly is 2 minutes behind at noon on Monday, and is 4 minutes and 48 seconds ahead at 2 p.m. on the following Monday. When did it show the correct time? | |||
| Right Option : B | |||
| View Explanation | |||
A watch, which gains 5 seconds every 3 minutes, is set right at 8 : 00 am. In the afternoon same day, when the faulty watch indicates 8:37, the actual time is
| |||
| Right Option : C | |||
| View Explanation | |||
Students / Parents Reviews [10]
I have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
