Question

In every $15$ minutes, the time of a watch decreases by $1$ minute. After showing the correct time at $1:00$ p.m., what time will the watch show after $8$ hours?

• A. $9:00$ p.m.
• B. $7:28$ a.m.
• C. $8:32$ p.m.
• D. $8:28$ p.m.

Answer 1

The correct option is D $8:28$ p.m.

Time decreased in $1$ hour $=4$ minutes.
Time decreased in $8$ hours $=(8\times 4)$ minutes $=32$ minutes.
After $8$ hours, the correct time is $9:00$ p.m. but the watch will show $8:28$ p.m.