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

### Instruction:
 Elisa na marafiki zake wawili walikwenda kula chakula cha jioni. Kila mmoja wao alinunua chakula chenye thamani ya $10. Baadaye, kila mmoja wao alikula kijiko kimoja cha aina ile ile ya ice cream. Ikiwa Elisa alikuwa na $45 ambazo zilikuwa za kutosha kulipia kila kitu, gharama ya kijiko kimoja cha ice cream ilikuwa kiasi gani?


### Response:
 Jumla ya gharama ya chakula ilikuwa $10 + $10 + $10 = $30.
$15 iliyobaki ililipwa kwa ajili ya ice cream.
$15 / 3 = $<<15/3=5>>5