Question

Due to a technical issue, an analog clock loses 5 minutes every hour. If it shows the correct time at 1 PM on Wednesday, when will it show the correct time again?

• A. 1 PM, next Wednesday
• B. 1 AM, next Tuesday
• C. 1 PM, next Tuesday
• D. 1 AM, next Wednesday

Answer 1

The correct option is C 1 PM, next Tuesday

Time lost in 1 hour = 5 minutes
Time lost in 1 day = 5 minutes $\times$ 24 = 120 minutes = $\frac{120}{2}\text{hours}$ = 2 hours

If the clock loses 12 hours, then it will be showing the correct time again.
2 hours are lost in 1 day.
12 hours can be lost in $\frac{12}{2}\times 1$ = 6 days.
$\therefore$ The clock will show the correct again after 6 days, i.e., at 1 pm on next tuesday.