Given:
Two planks are each 1.5 m long.
One plank is 2.5m long.
To find:
The total length of all the three planks.
Solution:
Two planks are each 1.5 m long. So,
First plank = 1.5 m
Second plank = 1.5 m
One plank is 2.5m long. So,
Third plank = 2.5 m
Now, the total length of all the three planks is
[tex]\text{Total length}=\text{First plank + Second plank + Third plank}[/tex]
[tex]\text{Total length}=1.5+1.5+2.5[/tex]
[tex]\text{Total length}=5.5[/tex]
Therefore, the total length of all the three planks is 5.5 m.