Question

An analogue clock is gaining three minutes every hour. If you set it to the correct time at 6pm on Saturday, when will it show the correct time again

Answer 1

After 10 days i.e. 6 pm on Tuesday it will show the correct time.

Step-by-step explanation:

The analogue clock is gaining 3 minutes every hour.

So, in 20 hours the clock will gain (3 × 20) = 60 minutes i.e. 1 hour.

Now, in this way when the clock gains 12 hours, it will show the correct time again.

So, after (20 × 12) = 240 hours i.e. 10 days the clock will gain 12 hours and give the correct time again.

If the clock is set to the correct time at 6 pm on Saturday, then after 10 days i.e. 6 pm on Tuesday it will show the correct time. (Answer)