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

### Instruction:
 Tonya ana $150.00 kwenye kadi yake ya mkopo. Ikiwa anaacha salio lolote kwenye kadi yake mwishoni mwa mwezi, anatozwa riba ya 20%. Ikiwa anafanya malipo ya $50.00 kwenye kadi yake, salio jipya litakuwa kiasi gani?


### Response:
 Kadi yake ina salio la $150.00 na anafanya malipo ya $50.00 hivyo salio jipya ni $150 - $50 = $<<150-50=100.00>>100.00
Hakulipia kabisa hivyo anatozwa riba ya 20% kwenye salio lake la $100.00 hivyo riba ni .20 * 100 = $<<20*.01*100=20.00>>20.00
Sali lake lilikuwa $100.00 na ametozwa $20.00 kwa riba hivyo salio jipya ni $100 + $20 = $<<100+20=120.00>>120.00