Time, Clock & Calendar
Hard
2 min
A clock loses 5 minutes every hour. It is set correctly at noon. What time will it display after 6 real hours?
Hint
The clock runs 55 minutes for every real 60 minutes.
Answer
5:30 PM.
Explanation
The clock loses 5 minutes per hour, so in 6 hours it loses 30 minutes. Six real hours after noon is 6 PM, so the clock displays 5:30 PM.
Step-by-Step Solution
Real time = 6 hours.
Loss = 6×5 = 30 minutes.
6:00 PM - 30 minutes = 5:30 PM.
Loss = 6×5 = 30 minutes.
6:00 PM - 30 minutes = 5:30 PM.