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a watch loses 30 secs every hour .If the watch was set right on sunday 11:30 .What is time did it show

Sagot :

The correct question is

A watch loses 30 secs every hour .If the watch was set right on Sunday 11:30pm .What is time did it show after 10 hours?

(a) Monday 9:25am

(b) Monday 9:30 am

(c) Monday 9:35

(d) Monday 9:25pm

Answer:

(a) Monday 9:25am

The time shown by the watch in 10 hours from its starting at 11:30pm on Sunday will give 9:25am on Monday.

Step-by-step explanation:

We are given that a watch looses 30 seconds in one hour and the Watch was set on 11:30pm on Sunday.

we need to find the time this watch will show after 10 hours from starting at 11:30pm on Sunday.

In 1 hour = 30 seconds is lost

In 10 hours = 30*10 = 300seconds

Converting 300 seconds into minutes we get

 = 300/60 = 5 minutes

This means whatever the actual time will be this watch will shows 5 minutes less.

10 Hours from 11:30pm on Sunday will be

9:30am on Monday morning

but since the watch is slow by 30 seconds each hours which will make 5 minutes difference from the real time in 10 hours so the time shown by the watch will be

9:25am on Monday morning.

Therefore the time shown by the watch in 10 hours from its starting at 11:30pm on Sunday will give 9:25am on Monday.