A clock loses two minutes every three hours for 4 days and gains 1% in the subsequent 6 days.
A clock loses two minutes every three hours for 4 days and gains 1% in the subsequent 6 days. If it was set right on Friday at 11 AM, what will be the time at the end of 10 days?
Answer/Solution
11:22:24 AM
Steps/Work
Clock loses: 2 minute in 3 hours = 16 minutes in 24 hours = 64 minutes in 4 days.
Clock gains: 1% in the subsequent 6 days = 1% in 6*24*60 minutes = 86.40 minute in 6 days;
Net gain in 10 days = 86.40 - 64 = 22.4 minutes.
11AM + 22.4 minutes = 11:22 and 4/10th of a minute or 24 seconds.
Answer: D.
Clock gains: 1% in the subsequent 6 days = 1% in 6*24*60 minutes = 86.40 minute in 6 days;
Net gain in 10 days = 86.40 - 64 = 22.4 minutes.
11AM + 22.4 minutes = 11:22 and 4/10th of a minute or 24 seconds.
Answer: D.