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

### Instruction:
 James ananunua CD 3. Mbili kati yao ni saa 1.5 kila moja. Ile ya mwisho ni mara mbili ya urefu huo. Urefu wa CD zote ni upi?


### Response:
 Urefu wa CD mbili za kwanza ni 1.5*2=$<<1.5*2=3>>3 saa.
Urefu wa CD ya mwisho ni 2*1.5=$<<2*1.5=3>>3 saa.
Hivyo, urefu wa CD zote ni 3+3=$<<3+3=6>>6 saa.