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

### Instruction:
Carla's brush is 12 inches long. If Carmen's brush is 50% longer than Carla's brush, how long is Carmen's brush in centimeters? (There are 2.5 centimeters per inch.)

### Response:
 Kwanza tafuta urefu wa brashi ya Carmen kwa inchi: 150% * inchi 12 = <<150*.01*12=18>>18 inchi
Kisha badilisha urefu huo kutoka inchi kwenda sentimita: inchi 18 * sentimita 2.5/inchi = <<18*2.5=45>>45 sentimita