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

### Instruction:
Jill can run up a hill at 9 feet/second and down a hill at 12 feet/second. How long does it take her to run up and down a 900 foot hill?

### Response:
 Kwanza tafuta muda ambao Jill anachukua kukimbia juu ya mlima: Miguu 900 / 9 miguu/sekunde = <<900/9=100>>100 sekunde
Kisha tafuta muda ambao Jill anachukua kukimbia chini ya mlima: Miguu 900 / 12 miguu/sekunde = <<900/12=75>>75 sekunde
Kisha ongeza muda wote kuwa muda wa Jill: 100 sekunde + 75 sekunde = <<100+75=175>>175 sekunde