A watch which gains uniformly is 2 minutes low at noon on Monday and is 4 min. 48 sec fast at 2 p.m. on the following Monday. When was it correct?
Choose the correct choice from the following options:
A) 2 p.m. on Tuesday B) 2 p.m. on Wednesday C) 3 p.m. on Thursday D) 1 p.m. on Friday E) 8 p.m. on Friday
Time from 12 p.m. on Monday to 2 p.m. on the following Monday = 7 days 2 hours = 170 hours.   The watch gains 2 + 4*4/5	min.	or	34/5	min. in 170 hrs.   Now,	34/5	min. are gained in 170 hrs.   2 min. are gained in 170 x	5/34	x 2	hrs	= 50 hrs.   Watch is correct 2 days 2 hrs. after 12 p.m. on Monday i.e., it will be correct at 2 p.m. on Wednesday.   Answer:2 p.m. on Wednesday
<result>B</result>
A watch which gains uniformly is 2 minutes low at noon on Monday and is 4 min. 48 sec fast at 2 p.m. on the following Monday. When was it correct?