Tag: time

Questions Related to time

Three bells in a temple toll at every $10$ minutes, $18$ minutes and $30$ minutes respectively. If they toll together at $7:00$ am , then the time among the following at which they will tool together again is 

maths measuring time time in 24 hour clock time difference time

  1. $1:30$ pm

  2. $2:30$ pm

  3. $3:30$ pm

  4. $3:00$ pm

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Correct Option: A

A clock is set at  $5{ am }.$  If the clock loses  $16$  minutes in  $24$  hours, what will be the true time when the clock indicates  $10$  pm on  $4 th$  day?

maths measuring time time in 24 hour clock time difference time

  1. $9:30{ pm }$

  2. $11 pm$

  3. $10 pm$

  4. $10:30{ pm }$

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Correct Option: A

Hari and Aman walk on a circular track and they take $120$ seconds and $150$ seconds respectively to complete one revolution. If they start together at $6:00$ AM from the starting point , then how many times will they meet between $6:05$ AM and $7:35$ AM?

maths measuring time time in 24 hour clock time difference time

  1. $6$

  2. $9$

  3. $12$

  4. $4$

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Correct Option: A

A person has mistaken the image of a clock in a plain mirror as the clock and read the time as 6:10. What was the correct time?

maths measuring time time in 24 hour clock time difference time

  1. 6:50

  2. 5:50

  3. 5:10

  4. 7:50

  5. None

Show answer
Correct Option: B
Explanation:

Assume that there is a line drawn between 12 and 6 on the clock, this can be a line of symmetry.
When we take the mirror image of this clock, the hands that are on the right side of this line will appear equidistant on the left side of the line and vice versa.
The time indicated is 6:10, the hour hand a little after 6 and the minute hand on 2.
Its mirror image will become, the hour hand a little before 6 and the minute hand on 10, i.e, 5:50.

A clock, which loses 5 minutes per day, is set to show the correct time at 12 noon on a Sunday. What time does the clock show at 12 noon on the next Sunday?

maths measuring time time in 24 hour clock time difference time

  1. 11 a.m.

  2. 12 noon

  3. 11.35 a.m.

  4. 11.25 a.m.

  5. None of these

Show answer
Correct Option: D
Explanation:

The clock loses $5$ minutes per day
in 7 days, time lost $=5 \times 7=35mins$
actual time $=12'o clock$,
time shown $=11:25 a.m.$

A clock is set to show the correct time at 11:00 a.m. The clock gains 12 minutes in 12 hours. What will be the correct time when the clock indicates 5:30 p.m. the next day?

maths measuring time time in 24 hour clock time difference time

  1. 5.00 p.m.

  2. 5.10 p.m.

  3. 5.20 p.m.

  4. 6.00 p.m.

  5. 5.48 a.m.

Show answer
Correct Option: A
Explanation:

The clock gains 12 mins in 12 hours,
It will gain 1 min in every 1 hour.
Difference in time the clock indicates=5:30 p.m.-11 a.m. (the next day)
=30.5 hours,
Time gained=30.5/1=30 mins.
Actual time=5 p.m.

There are two clocks on a wall, both set right at 10:00 a.m. One clock is losing 2 minutes per hour and the other clock is gaining 3 minutes per hour. If the clock which is losing 2 minutes per hour shows 3:00 p.m. the next day, what time does the clock gaining 3 minutes per hour show?

maths measuring time time in 24 hour clock time difference time

  1. 5.30 p.m.

  2. 4.00 p.m.

  3. 4.15 p.m.

  4. 5.00 p.m.

  5. None

Show answer
Correct Option: A
Explanation:

In each hour, the time difference between the 2 clocks will increase by 5mins
time passed $=24+2+3=29hrs$ on clock 1
Real time on clock $1=4 p.m$
difference between 2 clocks=$5*30=150mins$,
time on clock $2=3hrs+2hrs+30mins$
$=5.30 p.m$

At what time, between twelve o'clock and one o'clock, will the hands of the clock overlap again?

maths measuring time time in 24 hour clock time difference time

  1. 12 hours $\displaystyle 50 \frac{2}{11}$ minutes

  2. 12 hours 45 minutes

  3. 12 hours 59 minutes

  4. Never happen

  5. None of these

Show answer
Correct Option: D
Explanation:

At twelve o'clock, the 2 hands are overlapping. 
As the minutes pass, the minutes hand moves farther away from the hours hand.
Therefore, between twelve o'clock and 1 o'clock, the hands will not overlap again.

A watch showed five past five on Wednesday evening when the correct time was 5:00 p.m. It loses uniformly, and was 5 minutes slow after two days at 7:00 p.m. When did the watch show the correct time?

maths measuring time time in 24 hour clock time difference time

  1. Thursday 6:00 a.m.

  2. Thursday 6:00 p.m.

  3. Thursday 6:30 p.m.

  4. Thursday 5:00 a.m.

  5. None of these

Show answer
Correct Option: B
Explanation:

Since the watch was 5 minutes fast on Wednesday evening, 5:00 p.m. and was 5 minutes slow after two days at 7:00 p.m., the correct time would be at the mid point of these 2 times.
Time difference=(24+24+2)50 hours,
So the right time will be 25 hours past 5 p.m. Wednesday,
I.e, 6 p.m. on Tuesday.

A clock gains 10 minutes in 2 hours. It is set right at 10:I0 a.m. When the clock shows 4:40 p.m. on the same day, what is the correct time?

maths measuring time time in 24 hour clock time difference time

  1. 4.54 p.m.

  2. 5.00 p.m.

  3. 5.10 p.m.

  4. 4.10 p.m.

  5. None of these

Show answer
Correct Option: D
Explanation:

Let the hours passed be x,
time difference as per clock=5hrs and 30mins 
actual time=x*60+x*5=330,
x=5 hrs,
actual time=4:10