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

### Instruction:
 Gemma alinunua pizza nne kwa $10 kila moja, na akampa tipu ya $5 dereva wa kuleta. Alipata pesa ngapi kama anatoa noti ya hamsini?


### Response:
 Gharama ya pizza nne ni 4 x $10 = $<<4*10=40>>40.
Gemma alitoa tipu ya $5 kwa dereva, hivyo jumla ya gharama ilikuwa $40 + $5 = $<<40+5=45>>45.
Hivyo, Gemma anatoa $50 aliponunua pizza nne.
Hivyo, pesa yake ya kubadilisha ni $50 - $45 = $<<50-45=5>>5.