A clock gains 6 minutes every hour. If after 18 hours the clock shows 8 PM, then what is the actual time (in PM)?
Show answer & explanation
Correct answer: A
Explanation
The clock's advance in 18 hours:
18 × 6 = 108 minutes = 1 hour 48 minutes
That means the clock is ahead by 1 hour 48 minutes.
Correct time:
8:00 PM − 1:48 = 6:12 PM