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?	Pick one:
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) None
Solution   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 x4/5)min   = 34 / 5 min.in 170 hrs.   Now,34/5 min are gained in 170 hrs.   2 min are gained in(170x 5/34 x2)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?