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

### Instruction:
To get to the library, Jill spends 12 minutes waiting for her first bus, 30 minutes riding on her first bus, and half the combined wait and trip time on her second bus. How many minutes does her second bus ride take?

### Response:
 Kwanza ongeza muda uliotumika kusubiri basi la kwanza na muda uliotumika kusafiri kwenye basi hilo: dakika 12 + dakika 30 = <<12+30=42>>42 dakika
Kisha gawanya muda huo kwa 2 ili kupata muda uliotumika kwenye basi la pili: 42 dakika / 2 = <<42/2=21>>21 dakika