Page 3 - LN 7
P. 3
We know that, 60 minutes = 1 hour
Now, 140 minutes = 120 minutes + 20 minutes
= 60 minutes + 60 minutes + 20 minutes
= 60 minutes + 80 minutes
= 1 hour + 80 minutes
= 1 hour 80 minutes
Step 3: The LHS can now be written as
4 hours 140 minutes = 4 hours + 140 minutes
= 4 hours + 1 hour + 80 minutes
= 5 hours + 80 minutes
= 5 hours 80 minutes
Therefore, the required answer is 5.
Page | 3
