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A watch which gains uniformly is 5 min slow at 7 pm on Monday and is 5 min 30 s fast at 7 pm on Friday. When was the watch correct?
- a)2 days 3 hrs 5 minutes
- b)1 day 15 hrs 24 minutes
- c)1 day 21 hrs 12 minutes
- d)1 day 21 hrs 42 minutes
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
A watch which gains uniformly is 5 min slow at 7 pm on Monday and is ...
Total time in hours from Monday at 7 pm to Friday at 7 pm = (4 × 24, h = 95h.)
View all questions of this test
In 96 h the watch gain
Now, 21/ 2 minutes gained in 96 hrs.
Therefore, 5 minutes is gained in 
= 45 hr 42 minutes = 1 day 21 hr 42 minutes.
Most Upvoted Answer
A watch which gains uniformly is 5 min slow at 7 pm on Monday and is ...
Calculation of Correct Time:
- The watch gains 5 minutes uniformly from Monday 7 pm to Friday 7 pm, which is a total of 4 days.
- The total gain of the watch during this period is 5 min 30 sec.
- To find the time when the watch was correct, we need to calculate the average gain per day.
Calculating Average Gain per Day:
- Average gain per day = Total gain / Total days
- Average gain per day = 5 min 30 sec / 4 days
- Average gain per day = 5 min 30 sec / 96 hrs
- Average gain per day = 1 min 22.5 sec per day
Calculating Correct Time:
- The watch was 5 min slow on Monday at 7 pm.
- To reach the correct time, the watch needs to gain 5 min.
- Time taken to gain 5 min at the rate of 1 min 22.5 sec per day = 5 min / 1 min 22.5 sec
- Time taken = 3 days 15 hrs 24 min
- Adding this time to Monday 7 pm, we get the correct time as 10:24 pm on Thursday.
Therefore, the watch was correct at 10:24 pm on Thursday.
- The watch gains 5 minutes uniformly from Monday 7 pm to Friday 7 pm, which is a total of 4 days.
- The total gain of the watch during this period is 5 min 30 sec.
- To find the time when the watch was correct, we need to calculate the average gain per day.
Calculating Average Gain per Day:
- Average gain per day = Total gain / Total days
- Average gain per day = 5 min 30 sec / 4 days
- Average gain per day = 5 min 30 sec / 96 hrs
- Average gain per day = 1 min 22.5 sec per day
Calculating Correct Time:
- The watch was 5 min slow on Monday at 7 pm.
- To reach the correct time, the watch needs to gain 5 min.
- Time taken to gain 5 min at the rate of 1 min 22.5 sec per day = 5 min / 1 min 22.5 sec
- Time taken = 3 days 15 hrs 24 min
- Adding this time to Monday 7 pm, we get the correct time as 10:24 pm on Thursday.
Therefore, the watch was correct at 10:24 pm on Thursday.
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A watch which gains uniformly is 5 min slow at 7 pm on Monday and is 5 min 30 s fast at 7 pm on Friday. When was the watch correct?a) 2 days 3 hrs 5 minutesb) 1 day 15 hrs 24 minutesc) 1 day 21 hrs 12 minutesd) 1 day 21 hrs 42 minutesCorrect answer is option 'D'. Can you explain this answer?
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A watch which gains uniformly is 5 min slow at 7 pm on Monday and is 5 min 30 s fast at 7 pm on Friday. When was the watch correct?a) 2 days 3 hrs 5 minutesb) 1 day 15 hrs 24 minutesc) 1 day 21 hrs 12 minutesd) 1 day 21 hrs 42 minutesCorrect answer is option 'D'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about A watch which gains uniformly is 5 min slow at 7 pm on Monday and is 5 min 30 s fast at 7 pm on Friday. When was the watch correct?a) 2 days 3 hrs 5 minutesb) 1 day 15 hrs 24 minutesc) 1 day 21 hrs 12 minutesd) 1 day 21 hrs 42 minutesCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A watch which gains uniformly is 5 min slow at 7 pm on Monday and is 5 min 30 s fast at 7 pm on Friday. When was the watch correct?a) 2 days 3 hrs 5 minutesb) 1 day 15 hrs 24 minutesc) 1 day 21 hrs 12 minutesd) 1 day 21 hrs 42 minutesCorrect answer is option 'D'. Can you explain this answer?.
A watch which gains uniformly is 5 min slow at 7 pm on Monday and is 5 min 30 s fast at 7 pm on Friday. When was the watch correct?a) 2 days 3 hrs 5 minutesb) 1 day 15 hrs 24 minutesc) 1 day 21 hrs 12 minutesd) 1 day 21 hrs 42 minutesCorrect answer is option 'D'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about A watch which gains uniformly is 5 min slow at 7 pm on Monday and is 5 min 30 s fast at 7 pm on Friday. When was the watch correct?a) 2 days 3 hrs 5 minutesb) 1 day 15 hrs 24 minutesc) 1 day 21 hrs 12 minutesd) 1 day 21 hrs 42 minutesCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A watch which gains uniformly is 5 min slow at 7 pm on Monday and is 5 min 30 s fast at 7 pm on Friday. When was the watch correct?a) 2 days 3 hrs 5 minutesb) 1 day 15 hrs 24 minutesc) 1 day 21 hrs 12 minutesd) 1 day 21 hrs 42 minutesCorrect answer is option 'D'. Can you explain this answer?.
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A watch which gains uniformly is 5 min slow at 7 pm on Monday and is 5 min 30 s fast at 7 pm on Friday. When was the watch correct?a) 2 days 3 hrs 5 minutesb) 1 day 15 hrs 24 minutesc) 1 day 21 hrs 12 minutesd) 1 day 21 hrs 42 minutesCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for A watch which gains uniformly is 5 min slow at 7 pm on Monday and is 5 min 30 s fast at 7 pm on Friday. When was the watch correct?a) 2 days 3 hrs 5 minutesb) 1 day 15 hrs 24 minutesc) 1 day 21 hrs 12 minutesd) 1 day 21 hrs 42 minutesCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of A watch which gains uniformly is 5 min slow at 7 pm on Monday and is 5 min 30 s fast at 7 pm on Friday. When was the watch correct?a) 2 days 3 hrs 5 minutesb) 1 day 15 hrs 24 minutesc) 1 day 21 hrs 12 minutesd) 1 day 21 hrs 42 minutesCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
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