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

### 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:
First find the length of Carmen's brush in inches: 12 inches * 150% = <<12*150*.01=18>>18 inches
Then convert the length from inches to centimeters: 18 inches * 2.5 centimeters/inch = <<18*2.5=45>>45 centimeters
#### 45