Question

The following questions are based on time, day and date, calendar and clock.

A clock shows the time as 3:30 p.m. If the minute hand gains 2 minutes every hour, how many minutes will the dock gain by 4 a.m ?

1. 25 Minutes
2. 24 Minutes
3. 23 Minutes
4. 26 Minutes

Answer 1

Correct Answer - Option 1 : 25 Minutes

A clock gains 2 minutes every hour.

This means, every 60 minutes, clock gains 2 minutes.

Thus, every minute, clock gains 1/30 minutes.

From 3:30 pm to 4:00 a.m., we have 12 hours and 30 minutes.

In twelve hours, the clock gains 12 × 2 minutes i.e. 24 minutes.

In 30 minutes, the clock gains 1/30 × 30 minutes i.e. 1 minute.

Thus, total minutes gained in 12 hours and 30 minutes is 24 + 1 i.e. 25 minutes.

Hence, 25 Minutes is correct.