5. TBQ - Find the distance between first and last saplings

Tsewang plants \(4\) saplings in a row in the garden. The distance between two saplings is \(\frac{15}{4}\) \(m\). Find the distance between the first and last sapling. 

 

 

The distance between the first and last sapling is $i\frac{i}{i}$ \(m\)

 

[NOTE: With Simplification]