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

### Instruction:
 John ananunua kiti. Kisha, ananunua meza ambayo ni mara 3 ya bei ya kiti. Kisha, ananunua sofa ambayo ni mara 5 ya bei ya meza. Ikiwa John alilipa $380 kwa vitu vyote hivi, bei ya sofa ni kiasi gani?


### Response:
 Hebu x iwe bei ya kiti. Meza inagharimu 3*x na sofa inagharimu 5*3*x = 5*3*x = 15*x.
x + 3*x + 15*x = $380
19*x = $380
x = $380 / 19 = $20
Sofa inagharimu 15 * x = 15 * $20 = $<<15*20=300>>300