Subtract 10 hours and 59 minutes from 26 hours and 40 minutes.

We need to subtract $10 \text{ hours } 59 \text{ minutes}$ from $26 \text{ hours } 40 \text{ minutes}$.

Since $40 \text{ minutes}$ is less than $59 \text{ minutes}$, we need to borrow $1 \text{ hour}$ from the hours column.
$1 \text{ hour} = 60 \text{ minutes}$.
So, we reduce $26 \text{ hours}$ to $25 \text{ hours}$ and add $60 \text{ minutes}$ to $40 \text{ minutes}$.
The minutes column becomes $40 + 60 = 100 \text{ minutes}$.
Now, subtract the minutes: $100 - 59 = 41 \text{ minutes}$.

After borrowing, the hours column is $25 \text{ hours} - 10 \text{ hours} = 15 \text{ hours}$.

The result is $15 \text{ hours } 41 \text{ minutes}$.

The final answer is $\boxed{\text{15 h 41 min}}$.
2 ہو گئے۔ آج 3 باقی ہیں — اگلا بھیجیں۔