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

### Instruction:
 John alikuwa na $20. Alitumia 1/5 ya pesa yake kwa vitafunio na 3/4 ya pesa iliyobaki kwa mahitaji muhimu. Kiasi gani kimebaki kwenye pesa ya John?


### Response:
 John alitumia $20 x 1/5 = $<<20*1/5=4>>4 kwa vitafunio.
Alibakiwa na $20 - $4 = $<<20-4=16>>16 pesa iliyobaki.
Alitumia $16 x 3/4 = $<<16*3/4=12>>12 kwa mahitaji muhimu.
Hivyo, John amebakiwa na $16 - $12 = $<<16-12=4>>4.