A watch loses 5 seconds every hour. The watch was set correct on Wednesday at 6.30 am. What time did it show at 6.30 pm...

A watch loses 5 seconds every hour. The watch was set correct on Wednesday at 6.30 am. What time did it show at 6.30 pm the next Wednesday?

A. 6.15 pm
B. 6.16 pm
C. 6.29 pm
D. 6.45 pm

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-Seconds lost in an hour = 5 secs
-Set correct at 6: 30 a.m on Wednesday
-From 6.30 a.m to 6: 30 p.m Next Wednesday.
=24 x 7 = 168 hrs ( To Wednesday 6: 30 a.m)
-From 6: 30 a.m to 6: 30 p.m = 12 hrs
-Total hours = 168 + 12 = 180 hrs
If 1 hr = 5 secs
180 hrs = ?
=180 x 5 = 900 seconds
3600 secs = 1 hr
900 secs = ?

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Wilfykil answered the question on July 30, 2019 at 06:27

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