Question

In every $30$ minutes, the time of a watch increases by $3$ minutes. After showing the correct time at $5:00$ a.m., what time will the watch show after $6$ hours?

• A. $10:54$ a.m.
• B. $11:30$ a.m.
• C. $11:36$ a.m.
• D. $11:42$ a.m.

Answer 1

The correct option is C $11:36$ a.m.

Time gained in $1$ hour $=6$ minutes.
Time gained in $6$ hours $=(6\times 6)$ minutes $=36$ minutes.
After $6$ hours, the correct time is $11:00$ a.m. and the watch will show $11:36$ a.m.