Question

A clock gains 15 minutes per day. If it is set right at 12 noon, the time it shows at 4 AM is

A) 4.20 AM B) 4.30 AM C) 4.02 AM D) 4.10 AM

Answer 1

As, the clock gains 15 minutes in 24 hours.

Total hours passed from 12 Noon to 4 AM = 16 hours

So,

In 24 hours, the clock gains minutes = 15 minutes

In 1 hour, the clock will gain minutes = 15/24

In 16 hours, the clock will gain minutes = (15*16) /24

= 240/24

= 10 minutes.

So, at 4 AM the clock will show 4 :10 AM

Answer 2

Answer:

Here is your answer dear☺☺

As the clock gains 15 minutes in 24 hours,

Total hours passed through 12 noon to 4 am = 16 hours.

In 24 hours, the clock gains minutes = 15 minutes

In 1 hour, the clock will gain minutes = 15/24

In 16 hours, the clock will gain minutes = \frac{15×16}{24}

24

15×16

= \frac{240}{24}

24

240

= 10 minutes.

So, at 4 AM the clock will show 4 :10 AM