Respuesta :
Seven add five is 12 . A clock has four quarters , the first quarter is fifteen minutes.
Therefore, 5 1/5 hours after 7:00 = 12:15
Therefore, 5 1/5 hours after 7:00 = 12:15
The 5 1/4 hours after 7:00 is 12:15 or a quarter past 12.
We need to find what is the time when 5(1/4) hours are passed after 7:00.
We know that,
1 hour = 60 minutes
Let us write 5(1/4) hours in a simpler form.
5 ( 1 / 4 ) hours
= 21 / 4 hours
= 5.25 hours
Converting into minutes.
We have,
1 hour = 60 minutes
Multiplying 5.25 on both sides.
5.25 x 1 hour = 5.25 x 60 minutes
5.25 hour = 315 minutes
And 315 minutes means 5 hours 15 minutes.
i.e (5 x 60 + 15) minutes = (300+15) minutes = 315 minutes
So,
5.25 hour = 5 hours 15 minutes.
Adding 5 hours 15 minutes to 7:00 we have,
7 + 5 hours 15 minutes = 12 : 15
Thus, 12:15 or a quarter past 12 is our time.
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