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

### Instruction:
Tom needs to lower a rope down 6 stories.   One story is 10 feet.  The only rope being sold is 20 feet long but you lose 25% when lashing them together.  How many pieces of rope will he need to buy?

### Response:
 Anahitaji futi 10*6=<<10*6=60>>60
Anapata futi 20-5=<<20-5=15>>15 kutoka kila kipande
Hivyo anahitaji vipande 60/15=<<60/15=4>>4