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

### Instruction:
 Kuna abiria 80 kwenye ndege ambapo idadi ya wanaume na wanawake ni sawa. Abiria wengine ni watoto. Watoto wangapi wako kwenye ndege ikiwa kuna wanaume 30?


### Response:
 Kwa kuwa idadi ya wanaume na wanawake ni sawa, basi jumla ya wanaume na wanawake ni 30 + 30 = <<30+30=60>>60.
Hivyo, watoto 80 - 60 = <<80-60=20>>20 wako kwenye ndege.