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

### Instruction:
Delaney has to catch a bus that leaves at 8:00. a.m to school every day. He always takes 30 minutes to reach the pick-up point from his home. One day he woke up late and left his home at 7:50. How much time did he miss the bus by when he reached the pick-up point?

### 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.