Question

Change the following into minutes.
A) 7 hours
B) 8 hours 20 minutes
C) 12 hours

Answer 1

Hint:
Here first to calculate such questions we need to know the value of one hour in terms of minutes which is equal to sixty minutes. So to convert the given hours into minutes, we will multiply the given hours with 60. The answer will come in minutes.

Complete step by step solution:
A) 7 hours
We know,
1 hour =60 minutes.
To convert 7 hours into minutes, we will multiply 7 with 60 i.e.
7 hours $=\text{ }7\text{ }\times \text{ }60$ minutes
$=\text{ }420$ minutes
So, the required answer is 420 minutes.
B) 8 hours 20 minutes
We know,
1 hour =60 minutes.
But here we will first convert 8 hours into minutes, so we will multiply 8 with 60 i.e.
8 hours $=\text{ }8\text{ }\times \text{ }60$ minutes
$=\text{ }480$ minutes
Then we will add 20 minutes to 480 minutes to get the complete answer.
Now 8 hours20minutes $=\text{ }(480\text{ }+\text{ }20)\text{ }$minutes
$=\text{ }500$ minutes
So, the required answer is 500 minutes.
C) 12 hours
We know,
1 hour = 60 minutes.
To convert 12 hours into minutes, we will multiply it with 60 i.e.
12 hours $=\text{ }12\text{ }\times \text{ }60$ minutes
$=\text{ }720$ minutes.

So, the required answer is 720 minutes.

Note:
Minute is defined as the period of time equal to sixty seconds and it is also defined as the period of time equal to one sixtieth of an hour. We can also convert minutes into hours also since we know the value of one hours in terms of minutes which is sixty minutes, so to calculate the value of 1minue in terms of hour we will divide 1 by 60. So, $1\min =\dfrac{1}{60}hour$.