Discussion Forum



1)

A clock which loses uniformly was observed to be 5 minutes fast at 4:00 p.m on a Friday. On the subsequent Sunday at 8:00 a.m, the watch was 3 minutes slow. When did the watch show the correct time?


A) 6:00 p.m. on Saturday

B) 7:00 p.m. on Saturday

C) 4:00 p.m. on Saturday

D) 8:00 p.m. on Saturday

E) 5:00 p.m. on Saturday

Answer:

Option E

Explanation:

dumber of minutes lost = 8
Total time from 4:00 p.m. on Friday to 8:00 a.m. on
Sunday = 40 hours.
There for, It lost 8 minutes in 40 hours
Time taken to lose 5 minutes = ( 40 x 5) / 8= 25 hours.
Whenever it lost the first 5 minutes, the clock is going to show the correct time.
After 25 hours (i.e.,) at 5:00 p.m. on Saturday the cock shows the correct time