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A Learning Portal from Recruitment India
A clock is set right at 5 a.m. The clock loses 16 minutes in 24 hours.What will be the true time when the clock indicates 10 p.m. on 4th day?
1pm
12 pm
2 pm
11 pm
Answer with explanation
Answer: Option DExplanation
Time from 5 am. on a day to 10 pm. on 4th day = 89 hours.
Now 23 hrs 44 min. of this clock = 24 hours of correct clock.
356/15 hrs of this clock = 24 hours of correct clock
89 hrs of this clock = (24 x 31556 x 89) hrs of correct clock.
= 90 hrs of correct clock.
So, the correct time is 11 p.m.
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The edge between the moment hand and the hour hand of a clock when the time is 4.20, is
10°
0°
20°
5°
Answer with explanation
Answer: Option AExplanation
Angle followed by hour hand in 13/3 hrs. =(360/12*13/3)°= 130° Point followed by min. hand in 20 min. = (360/60*20)°= 120° ∴ Required point = (130-120)°= 10°
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What when the time is 6:32, then what is the angle b/w the hour hand & the minute hand of a clock?
8°
12°
4°
2°
Answer with explanation
Answer: Option CExplanation
Formula used = θ = 30H – (11/2)M where, H= hours, M= minutes
H= 6 , M= 32
Required angle, θ = 30×6 – (11/2)32 = 4°
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A clock is set right at 8 a.m. The clock gains 10 minutes in 24 hours will be the true time when the clock indicates 1 p.m. on the following day?
45 min. past 12.
46 min. past 12.
47 min. past 12.
48 min. past 12.
Answer with explanation
Answer: Option DExplanation
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A clock is set comfortable Am. The check loses 16 minutes in 24 hours. What will be the genuine time when the clock shows 10 pm on fourth day?
12 pm
11 pm
11 am
12 am
Answer with explanation
Answer: Option BExplanation
Time from 5am on a day to 10 pm on fourth day= 89 hours Presently 23hrs. 44min. of this clock= 24 hours of right clock. ∴ 356/15 hrs of this clock= (24*15/356*89) hrs. Of right clock. = 90 hrs of right clock. Along these lines, the right time is 11 pm.
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Find the angle between the two hands of a clock at 15 minutes past 5 o’ clock.
30°
35°
37.5°
67.5°
Answer with explanation
Answer: Option DExplanation
At 15 minutes past 5 o' clock, the minute hand is at 3 and hour hand is slightly ahead of 5. In 60 minutes, the hour hand moves ahead by 300 ∴ In 15 minutes, the hour hand moves ahead by = (30/60)*15 = 7.5° Angle between 3 and 5 hour spaces = 60°. ∴ The total angle between the two hands at 15 minutes past 5 o' clock = 60 + 7.5 = 67.5°
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At what time between 7 o’clock and 8 o’clock, will the hands of a clock be together?
38(2/11) minutes past 7 o’ clock
32(1/11) minutes before 8 o’ clock
33(5/12) minutes past 7 o’ clock
35(7/11) minutes past 8 o’ clock
Answer with explanation
Answer: Option AExplanation
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Number of hours and minutes from 6 : 14 am to 8 : 02 pm on the same days is ?
12 h and 16 min
13 h and 48 min
2 h and 12 min
14h and 16 min
Answer with explanation
Answer: Option BExplanation
Total hours 6 : 14 am morning to evening 6 : 14 pm = 12 h
and total hours from 6 : 14 pm evening to 8 : 02 pm evening = 8 : 02 – 6 : 14 = 1 : 18 h i.e., 1 h and 48 min
∴ Total hours and minutes = 12 h + 1 h 48 min
= 13 h and 48 min
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A clock is started at noon. By 10 minutes past 5, the hour hand has turned through
145º
155º
160º
150º
Answer with explanation
Answer: Option BExplanation
Angle traced by hour hand in 12 hrs =
Angle traced by hour hand in 5 hrs 10 min. i.e.,
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In every 30 minutes the time of a watch increases by 3 minutes. After showing the correct time at 5 am , what time will the watch show after 6 hours ?
10 : 54 am
11 : 36 am
11 : 42 am
11 : 38 pm
Answer with explanation
Answer: Option BExplanation
Time gained in 1 hour = 6 minutes
Time gained in 6 hours = (6 × 6) minutes = 36 minutes
After 6 hours, the correct time is 11 : 00 am and the watch will show 11 : 36 am.
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A watch gains 5 seconds in 3 minutes and was set right at 8 AM. What time will it show at 10 PM on the same day ?
10 : 27 : 41 AM
8 : 51 : 04 AM
9 : 45 : 15 PM
10 : 23 : 20 PM
Answer with explanation
Answer: Option DExplanation
The watch gains 5 seconds in 3 minutes = 100 seconds in 1 hour.
From 8 AM to 10 PM on the same day, time passed is 14 hours.
In 14 hours, the watch would have gained 1400 seconds or 23 minutes 20 seconds.
So, when the correct time is 10 PM, the watch would show 10 : 23 : 20 PM
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A watch which gains uniformly is 6 min slow at 5 p.m. on Monday. On the following Monday at 9 am, it was 10 min 40 seconds fast. When was it correct?
8 : 36 pm. on Thursday
2 : 36 am on Thursday
2 : 36 pm. on Thursday
8 : 36 am on Thursday
Answer with explanation
Answer: Option BExplanation
The clock has totally gained 16 minutes and 40 sec. i.e. 1000 seconds in 160 hrs. In order to show the right time, the clock has to gain only 6 min i.e. 360 seconds. Just apply the chain rule, the clock gained 1000 sec in 160 hrs, it will gain 360 sec. In 360 × 160/1000 = 288/5 hrs i.e. 57 3/5. Adding 57 hrs & 36 minutes in Monday 5 p.m. you get 2:36 a.m. on Thursday.
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A clock is set right at 10 a.m. on Monday. The clock loses 15 min. in 24 hrs. What will be the true time when the clock indicates 4 am on the following Saturday?
5:12 am
5:32 am
6:32 am
5:48 am
Answer with explanation
Answer: Option AExplanation
From 10 am on 1st day to 4 am on 5th day is total 114 hours. When a clock loses 15 min, then 23 hours 45 min of this clock are the same as 24 hours of correct clock i.e. 95/4 hours of this clock = 24 hours of correct clock. 95/4 hours of this clock =((24×4/95)×114) hours of correct clock = 115.2 hours of correct clock which is equal to 115 hours 12 minThe correct time is 5:12 am.
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At what time between 2 and 3 o’clock will the hands of a clock be together?
(9 + 10/11) min past 2
(10 + 10/11) min past 2
(11 + 10/11) min past 2
(12 + 10/11) min past 2
Answer with explanation
Answer: Option AExplanation
At 2 o’clock, the hour hand is at 2 and the minute hand is at 12, i.e. they are 10 min spaces apart.
To be together, the minute hand must gain 10 minutes over the hour hand.
Now, 55 minutes are gained by it in 60 min.
10 minutes will be gained in (60/55)*10min=10(10/11)min
The hands will coincide at 10(10/11) min. past 2.
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Imagine that your watch was correct at noon, but then it began to lose 30 minutes each hour. It now show 4 pm but it stopped 5 hours ago. What is the correct time now = ?
9 : 30 pm
11 pm
1 am
1 : 30 am
Answer with explanation
Answer: Option CExplanation
The watch loses (1/2) hour each hour. So, it must have take 8 hours to show 4 pm from 12 noon.
Thus, it stopped at 8 pm.
So, the correct time is 5 hours ahead of 8 pm, i,e., 1 am.
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There are two clocks, both set to show 10 pm on 21st January 2010. One clock gains 2 minutes in an hour and the other clock loses 5 minutes in an hour. Then by how many minutes do the two clocks differ at 4 pm on 22nd January 2010 ?
126 minutes
136 minutes
96 minutes
106 minutes
Answer with explanation
Answer: Option AExplanation
One clock show 10 pm, on 21st January 2010
One clock gains = 2 minutes
Other clock loses = 5 minutes
Time period between 10 pm and 4 pm = 18 hours
∴ Required difference
= (2 × 18 + 5 × 18 ) minutes
= 126 minutes
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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?
2 p.m. on Tuesday
2 p.m. on Wednesday
3 p.m. on Thursday
1 p.m. on Friday
Answer with explanation
Answer: Option BExplanation
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A clock started at noon. By 10 minutes past 5, the hour hand has turned through ?
155 Degree
145 Degree
175 Degree
165 Degree
Answer with explanation
Answer: Option AExplanation
Angle traced by hour hand in 12 hours = 360o.
Angle traced by hour hand in 5 hrs 10 min = 31/6 hrs = (360/12) x (31/6) = 155 Degree
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How many times in a day, are the hands of a clock in straight line but opposite in direction?
20
22
32
40
Answer with explanation
Answer: Option BExplanation
The hands of a clock point in opposite directions (in the same straight line) 11 times in every 12 hours. (Because between 5 and 7 they point in opposite directions at 6 o’clcok only).
So, in a day, the hands point in the opposite directions 22 times.
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The angle between the minute hand and the hour hand of the clock when the time is 4:20 is?
15 Degree
20 Degree
12 Degree
10 Degree
Answer with explanation
Answer: Option DExplanation
Angle traced by hour hand in 13/3 hrs = (360/12) x (13/3) = 130o.
Angle traced by minute in 20 minutes =(360/12) x (20) = 120o.
Required angle is = 130o – 120o = 10 Degree
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