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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.
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