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

### Instruction:
 Delaney anapaswa kuchukua basi linaloondoka saa 8:00 asubuhi kwenda shule kila siku. Mara zote huchukua dakika 30 kufika mahali pa kuchukuliwa kutoka nyumbani kwake. Siku moja aliamka tarde na akaondoka nyumbani kwake saa 7:50. Alipofika mahali pa kuchukuliwa, alikosa basi kwa muda gani?


### Response:
 Ikiwa aliondoka nyumbani kwake saa 7:50 asubuhi na umbali wa mahali pa kuchukuliwa ni dakika 30, alifika mahali pa kuchukuliwa saa 7:50 + dakika 30 = 8:20 asubuhi.
Ikiwa basi linatoka saa 8:00 asubuhi kila siku, basi Delaney alikuwa amechelewa dakika 8:20 asubuhi - 8:00 asubuhi = <<820-800=20>>20 dakika wakati basi tayari lilikuwa limeondoka.