Question

Add \[5h40\min \] and \[6h25\min \].

Answer 1

Hint: Here we will add the given values of times. Suppose if the minute part is greater than \[60\] we will convert it into hours and then we will add that hour and minute with the answer and we will get our final answer.

Complete step by step solution:
It is given that we have to find out the sum of \[5{\rm{h}}40\min \] and \[6{\rm{h}}25\min \]
We will add minutes together and then the hours.
Let us now add the minutes and hours we get,
\[5{\rm{h}}40\min + 6{\rm{h}}25\min \]
Let us simplify the above equation, we get,
\[11{\rm{h}}65\min \]
Here, the minute is more than \[60\min \]. So, we will change it to an hour and minutes.
We know that, \[1h = 60\min \]\[\]
Then we can write, \[65\min \] as \[60\min + 5\min = 1{\rm{h}}5\min \]
Now we will add \[1{\rm{h}}05\min \] with the total hour time we have found.
That is \[11{\rm{h + }}1{\rm{h}}05\min = 12{\rm{h}}05\min \]
So, the final answer will be \[12{\rm{h}}05\min \].

$\therefore$ The sum of \[5{\rm{h}}40\min \] and \[6{\rm{h}}25\min \] as \[12{\rm{h}}05\min \].

Note:
There is another way to find the sum.
At first, we will change the given time into minute and then we will add.
We know that, \[1{\rm{h}} = 60\min \]\[\]
So, we have, \[5{\rm{h}}40\min = (5 \times 60) + 40\min = 340\min \]
\[6{\rm{h}}25\min = (6 \times 60) + 25\min = 385\min \]
Now we will add \[340\min + 385\min \]
On adding the above equation we get, \[725\min \]
Now we will convert \[725\min \] into hour and minutes.
To convert minutes into hours we have to divide the total time in minutes by 60 while dividing the minutes the remainder in the division is written as minutes whereas the quotient in the division is written as hours.
The time in hours is \[725\min \div 60\]
On dividing the above equation we get quotient as 12 and remainder as 5 hence we get,
The sum of the given time is \[12{\rm{h}}05\min \]
Hence, the sum of \[5{\rm{h}}40\min \] and \[6{\rm{h}}25\min \] is \[12{\rm{h}}05\min \].