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

### Instruction:
Martha has 11 butterflies in her collection. She has twice as many blue butterflies as yellow butterflies. The rest of her butterflies are black. If Martha has 5 black butterflies, how many blue butterflies does she have?

### Response:
 Bila kuhesabu kipepeo mweusi, Martha ana kipepeo 11-5=<<11-5=6>>6 wa bluu na manjano.
Kipepeo wa manjano wa Martha ni (6/3)=2.
Martha ana kipepeo 2*2=<<2*2=4>>4 wa bluu.