A Watch Which Gains Uniformly Is 5 Min, Slow At 8 O'clock In The Morning On Sunday And It Is 5 Min 48 Sec. Fast At 8 P.M On Following Sunday. When Was It Correct?

Time from 8 a.m on Sunday to 8 p.m on following Sunday = 7 days 12 hours = 180 hours

Therefore, watch gains 5/54 min in 180 hours

Now 54/5min are gained in 180 hrs

Therefore, 5 min are gained in (180× 5/54 *5) hrs. = 83 hrs 20 min.

= 3 days 11 hrs 20 min.

Therefore, the watch is correct 3 days 11 hrs 20 min. after 8 a.m. on Sunday

Therefore, it will be correct at 20 min past 7 p.m. on Wednesday

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