Question

A watch which gains uniformly is 2 minutes low at noon on Tuesday and is 4 min 48 sec fast at 2 p.m. on the following Tuesday. When was it correct ?
A) 12 p.m. on Wednesday
B) 2 p.m. on Thursday
C) 3 p.m. on Thursday
D) 2 p.m. on Wednesday

Answer 1

A watch which gains uniformly is 2 minutes low at noon on Tuesday and is 4 min 48 sec fast at 2 p.m. on the following Tuesday. When was it correct ?
A) 12 p.m. on Wednesday
B) 2 p.m. on Thursday
C) 3 p.m. on Thursday
D) 2 p.m. on Wednesday✔️✔️✔️✔️

Answer 2

Q:

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?

A) 2 p.m. on Tuesday
B) 2 p.m. on Wednesday
C) 3 p.m. on Thursday
D) 1 p.m. on Friday

Answer:   B) 2 p.m. on Wednesday 

Read Description:

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(mixed fraction)] min.  or 34/5 min. in 170 hrs. 

Now,  34/5min.are gained in 170 hrs. 
 
2 min.are gained in (170*5/34*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