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

### Instruction:
If Ken's house is twice as far from Dawn's house as Mary's house along a certain road, and Ken's house is 4 miles away from Dawn's house along this same road, how much distance (in miles) will Ken cover if he goes from his house to Dawn's house, then Mary's, then back to Dawn's before going back to his own house?

### Response:
 Kwa kuwa nyumba ya Ken iko mbali mara mbili na nyumba ya Dawn kama ilivyo kwa nyumba ya Mary, umbali kati ya Ken na Mary ni nusu ya umbali kati ya Ken na Dawn, kwa hivyo umbali huo ni (1/2)*4 = <<4*1/2=2>>2 maili
Ikiwa Ken anaenda kutoka nyumbani kwake hadi kwa Dawn, umbali uliofunikwa ni maili 4
Anaenda kutoka hapo hadi kwa Mary (maili 2), kwa umbali jumla wa maili 4+2 = <<4+2=6>>6
Anarudi kwa Dawn (maili nyingine 2), kufanya umbali jumla wa 6+2 = <<6+2=8>>8 maili
Anarudi nyumbani kwake (maili 4), kwa umbali jumla wa 8+4 = <<8+4=12>>12 maili