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

### Instruction:
 Tom anahitaji kushusha kamba kwa sakafu 6. Sakafu moja ni futi 10. Kamba pekee inayouzwa ni urefu wa futi 20 lakini unapoteza 25% unapozishikiza pamoja. Anahitaji kununua vipande vingapi vya kamba?


### 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