Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
There are three trees in the town square. The tallest tree is 150 feet tall. The middle height tree is 2/3 the height of the tallest tree. The shortest tree is half the size of the middle tree.  How tall is the shortest tree?

### Response:
 Mti mrefu zaidi: <<150=150>>150 futi
Mti wa kati: (150/3)*2=300/3=100 futi
Mti mfupi zaidi: (100/2)=<<(100/2)=50>>50 futi