Question

A clock loses 1% time during the first week and then gains 2% time during the next one week. If the clock was set right at 12 noon on a Sunday, what will be the time that the clock will show exactly 14 days from the time it was set right? 

A. 1:36:48 

B. 1:40:48 

C. 1:41:24 

D. 10:19:12.

Answer 1

Correct option: B. 1:40:48

Explanation: 

The number of seconds lost in the first week is 0.01 x 7 x 24 x 60 x 60 = 6048. The number of seconds gained in the first week is 0.02 x 7 x 24 x 60 x 60 = 2 x 6048. Net gain is 6048 seconds, i.e., 1 hour 40 minutes 48 seconds.