Question

A castle is guarded 24 hours a day. Three guards share the work equally. The first guard starts duty at 6:00 AM daily. At what time does the third guard start duty?

A

с

A-2:00 PM

B-6:00 PM

C-11:00 AM

D-10:00 PM



plz tell step by step explaination and answer ​

Answer 1

10 pm is the answer as each one will guard have a duty if 8 hours so through that if the 1st guard is at 6 o’clock then the 2nd will be at 2 pm so the 3rd will be at 10pm

Answer 2

10:00 PM is the time at which the third guard starts his duty. D.

Given,

A castle is guarded 24 hours a day. 3 guards share the work equally.

The first guard starts duty at 06:00 AM.

To Find,

The time at which the third guard starts duty.

Solution,

As 3 guards share the work equally in 24 hours.

⇒ Each guard has to work for = 24/3 = 8 hours.

The time interval for the first guard is,

⇒ 06:00 AM + 8 hours = 14:00 = 02:00 PM

It means the first guard work interval is from 06:00 AM to 02:00 PM.

The time interval for the second guard is,

⇒ 02:00 PM(14:00) + 8 hours = 22:00 = 10:00 PM

It means the second guard work interval is from 02:00 PM to 10:00 PM.

We know that the time at which the second guard ends the duty, the third guard starts the duty.

⇒ The third guard starts duty = 10:00 PM.

Hence, 10:00 PM is the time at which the third guard starts his duty.

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