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

### Instruction:
 Micah, Dean, na Jake wote wanafanya mazoezi kwa ajili ya mbio za marathon zilizoandaliwa na shirika la ndani la kusaidia watoto katika mji wao wenye saratani. Micah anaendesha mara 2/3 kasi ya Dean. Inamchukua Jake muda wa 1/3 zaidi kumaliza marathon kuliko inavyomchukua Micah. Ikiwa Dean anachukua masaa 9, muda jumla ambao watatu hao wanachukua kumaliza marathon ni upi?


### Response:
 Ikiwa Dean anachukua masaa 9 kumaliza marathon, inamchukua Micah masaa 2/3 * 9 = <<9*2/3=6>>6 kumaliza.
Inamchukua Jake masaa 1/3 zaidi kumaliza marathon kuliko Micah, jumla ya masaa 1/3 * 6 = <<6*1/3=2>>2 zaidi.
Jake anachukua jumla ya masaa 6 + 2 = <<6+2=8>>8 kumaliza marathon.
Micah, Dean, na Jake wanachukua jumla ya masaa 8 + 6 + 9 = <<8+6+9=23>>23 kumaliza marathon.