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

### Instruction:
 Inamchukua Derek dakika 9 kutembea maili moja ikiwa hana haja ya kutembea na ndugu yake. Ikiwa anapaswa kumchukua ndugu yake, inamchukua dakika 12 kutembea maili moja. Itamchukua muda gani zaidi kwa dakika kwa Derek kutembea maili 20 ikiwa anapaswa kumchukua ndugu yake?


### Response:
 Pekee itamchukua dakika 9*20=<<9*20=180>>180
Pamoja na ndugu yake, itamchukua dakika 12*20=<<12*20=240>>240
240-180=<<240-180=60>>60 dakika zaidi