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

### Instruction:
Stella wanted to buy a new dress for the upcoming dance.  At the store she found out that the dress she wanted was $50.  The store was offering 30% off of everything in the store.  What was the final cost of the dress?

### Response:
 Punguzo la 30% kwa $50 ni 30/100*$50 = $<<30/100*50=15>>15 bei ya punguzo
Gauni liligharimu $50 minus $15 (punguzo la 30%) hivyo gauni liligharimu $50-$15 = $<<50-15=35>>35.