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

### Instruction:
 Alyssa na Chelsea walinunua pamoja mishumaa 40 kwa ajili ya kupamba chumba chao. Alyssa alitumia nusu yao, na Chelsea alitumia 70% ya mishumaa iliyosalia. Mishumaa mingapi ipo sasa katika chumba?


### Response:
 Alyssa alitumia nusu ya mishumaa, ambayo ni 1/2*40 = <<1/2*40=20>>20 mishumaa.
Idadi ya mishumaa iliyosalia ni 40-20 = <<40-20=20>>20.
Chelsea alitumia 70% ya mishumaa iliyosalia, jumla ya mishumaa 70/100*20 = <<70/100*20=14>>14.
Kuna mishumaa 20-14 = <<20-14=6>>6 katika chumba sasa.