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

### Instruction:
 Nate anaanza safari yake ya kambi na viberiti 70. Anapoteza 10 katika mto na mbwa wake anakula mara mbili ya hizo. Anabakiwa na viberiti vingapi?


### Response:
 Kwanza tafuta idadi ya viberiti ambavyo mbwa anakula: 10 viberiti * 2 = <<10*2=20>>20 viberiti
Kisha toa idadi ya viberiti vilivyopotea kutoka kwenye idadi ya awali ili kupata idadi ya mwisho: 70 viberiti - 10 viberiti - 20 viberiti = 40 viberiti