A watch is 1 minute slow at 1 p.m. on Tuesday and 2 minutes fast at 1 p.m. on Thursday. When did it show the… · ABC26GN5217
Subject: General Aptitude · Chapter: Clocks · Exam: M.A.T. 2004
A watch is 1 minute slow at 1 p.m. on Tuesday and 2 minutes fast at 1 p.m. on Thursday. When did it show the correct time?
(a)1.00 a.m. on Wednesday
(b)5.00 a.m. on Wednesday
(c)1.00 p.m. on Wednesday
(d)5.00 p.m. on Wednesday
Answer
Answer (as printed): B
Explanation
Time from 1 p.m. on Tuesday to 1 p.m. on Thursday = 48 hours. So, the watch gains (1 + 2) min or 3 min in 48 hrs. Now, 3 min are gained in 48 hrs. 48 So, 1 min is gained in = 16 hrs. 3 Thus, the watch showed the correct time 16 hrs. after 1 p.m. on Tuesday, i.e. 5 a.m. on Wednesday.
Explanation as extracted from the printed page; notation may be imperfect.