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- Question
How much does a watch lose per day, if its hands coincide ever 64 minutes?
Options- A. 32 8/11
- B. 33 8/11
- C. 34 8/11
- D. 35 8/11
- Correct Answer
- 32 8/11
Explanation55min spaces are covered in 60min
60 min. spaces are covered in (60/55 x 60) min= 65+5/11 min.
loss in 64min=(65+5/11)- 64 =16/11
Loss in 24 hrs (16/11 x 1/64 x 24 x 60) min= 32 8/11.
- 1. At what time between 7 and 8 o'clock will the hands of a clock be in the same straight line but,not together?
Options- A. (5 + 5/11 )min past 7
- B. (6 + 5/11) min past 7
- C. 7
- D. 8 Discuss
- 2. The angle between the minute hand and the hour hand of a clock when the time is 8:30
Options- A. 80 Degrees
- B. 75 Degrees
- C. 60 Degrees
- D. 105 Degrees Discuss
- 3. A watch which gains 5 seconds in 3 minutes was set right at 7 a.m. In the afternoon of the same day, when the watch indicated quarter past 4 o'clock, the true time is:
Options- A. 4pm
- B. 5pm
- C. 6pm
- D. 7pm Discuss
- 4. At what angle the hands of a clock are inclined at 15 minutes past 5?
Options- A. 57.5 degrees
- B. 67.5 degrees
- C. 77.5 degrees
- D. 87.5 degrees Discuss
- 5. Find the angle between the hour hand and the minute hand of a clock when the time is 3.25
Options- A. 47.5 degrees
- B. 57.5 degrees
- C. 45.5 degrees
- D. 55.5 degrees Discuss
- 6. The reflex angle between the hands of a clock at 10.25 is
Options- A. 197 1/2
- B. 167 1/2
- C. 157 1/2
- D. 187 1/2 Discuss
- 7. Find at what time between 8 and 9 o'clock will the hands of a clock be in the same straight line but not together ?
Options- A. 100/11 min past 8
- B. 120/11 min past 8
- C. 90/11 min past 8
- D. 80/11 min past 8 Discuss
- 8. At what time between 5.30 and 6 will the hands of a clock be at right angles?
Options- A. (43 + 5/11) min past 5
- B. (43 + 7/11) min pats 5
- C. 5
- D. 7 Discuss
- 9. What time between 4 and 5 o'clock will the hands of a clock be at rightangle?
Options- A. 3 5/11
- B. 4 5/11
- C. 5 5/11
- D. 6 5/11 Discuss
- 10. A watch which gains uniformly is 2 minutes low at noon on monday and is 4 min.48 sec fast at 2 p.m on the following monday. when was it correct ?
Options- A. 2 p.m on Tuesday
- B. 2 p.m on Wednesday
- C. 3 p.m on Thursday
- D. 1 p.m on Friday Discuss
Search Results
Correct Answer: (5 + 5/11 )min past 7
Correct Answer: 75 Degrees
Explanation:
Angle traced by hour hand in 17/2 hrs = = 255
Angle traced by min hand in 30 min = = 180
Therefore, Required angle = (255 - 180) =
Correct Answer: 4pm
Correct Answer: 67.5 degrees
Correct Answer: 47.5 degrees
Explanation:
At 3 O'clock, Minute hand is at 12 while the Hour hand is at 3. Again the minute hand has to sweep through ( 30 x 5 ) ie 150° for reaching the figure 5 to show 25 mins.
Simultaneously the Hour hand will also rotate for 25 mins. Thus starting from the mark, 3 the hour hand will cover an angle = (25 x 30) / 60 = 12.5°
Hence, Angle between Hour and the Minute hand = ( 60 - 12.5 ) = 47.5°
Correct Answer: 197 1/2
Correct Answer: 120/11 min past 8
Explanation:
In this type of problems the formulae is
x is replaced by the first interval of given time Here i.e 8
=
min
Therefore the hands will be in the same straight line but not
together at
min.past 8.
Correct Answer: (43 + 7/11) min pats 5
Explanation:
At 5 o'clock, the hands are 25 min. spaces apart.
To be at right angles and that too between 5.30 and 6, the minute hand has to gain (25 + 15) = 40 min. spaces.
55 min. spaces are gained in 60 min
40 min. spaces are gained in min
Correct Answer: 5 5/11
Explanation:
this type of problems the formulae is
(5*x + or -15)*(12/11)
Here x is replaced by the first interval of given time
here i.e 4
Case 1 : (5*x + 15)*(12/11)
(5*4 +15)*(12/11)
(20+15)*(12/11)
35*12/11=420/11=38 2/11 min.
Therefore they are right angles at 38 2/11 min .past4
Case 2 : (5*x-15)*(12/11)
(5*4-15)*(12/11)
(20-15)*(12/11)
5*12/11=60/11 min=5 5/11min
Therefore they are right angles at 5 5/11 min.past4.
Correct Answer: 2 p.m on Wednesday
Explanation:
Time from 12 p.m on monday to 2 p.m on the following monday = 7 days 2 hours = 170 hours
Therefore, The watch gains min. or 34/5 min. in 170 hrs.
Now, 34/5 min. are gained in 170 hrs.
Therefore, 2 min are gained in hrs = 50 hrs
Therefore, Watch is correct 2 days 2 hrs. after 12 p.m on monday i.e it will be correct at 2 p.m on wednesday.
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