Question

A clock which gains 5 minutes for every 6 hours is 10 minutes slow at 9:00 a.m. on Monday. At what time will the clock show the correct time?

Answer 1

Given:

A clock which gains 5 minutes for every 6 hours

To find:

At what time will the clock show the correct time

Solution:

It is given in the question that the clock is 10 minutes slow at 9:00 a.m. on Monday.

So the clock has to gain 10 minutes to show the correct time to the user.

As it is given that:

• 5 minutes gain by the watch in 6 hours
• 10 minutes gain by the watch in 12 hours
• 9:00 a.m + 12 hour = 9:00 p.m

Hence the clock shows the correct time at 9:00 p.m. on Monday.