A clock is set right at 10 am. If the clock gains 8 minutes uniformly in 24 hours, then what time will it show at 7 pm on the same day?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 7:03 pm
Step-by-step explanation:
- The clock gains 8 minutes in 24 hours.
- So, gain per hour = $\frac{8}{24} = \frac{1}{3}$ minute = 20 seconds per hour.
Time from 10:00 am to 7:00 pm:
= 9 hours
Total gain in 9 hours:
$9 \times \frac{1}{3} = 3 \text{ minutes}$
Displayed time:
Actual time = 7:00 pm
Clock gains = 3 minutes
Shown time = 7:03 pm