Question

A clock is correct on Monday at 3{:00 AM but gains 2 minutes per hour. What time will it show when the actual time is 7{:}30 PM on Tuesday?}

• A. 8{:}48 PM
• B. 8{:}45 PM
• C. 8{:}51 PM
• D. 9{:}10 PM

Hint:

N/A

Answer 1

The Correct Option is C

Elapsed actual time: Mon 3:00 AM → Tue 7:30 PM = 24 + 16.5 = 40.5 hours.
Gain = 2 min/hour ⇒ 40.5 × 2 = 81 minutes = 1 h 21 m.
Shown time = actual time + gain = 7:30 PM + 1:21 = 8:51 PM.
⇒ 8:51 PM.