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

### Instruction:
Susan wants to throw a party for her mom. She is planning on having 30 guests. For dinner she is making a recipe that makes 2 servings each. Each batch of the recipe calls for 4 potatoes and 1 teaspoon of salt. A potato costs $.10 and a container of salt costs $2 at the supermarket. If each container of salt has 5 teaspoons, how much money will Susan spend on food?

### Response:
 Susan anahitaji kuandaa batches 15 za mapishi.
Hii inamaanisha anahitaji viazi 60.
Hii itagharimu 60*$0.10=$6.
Pia anahitaji vijiko 15 cha chumvi.
Hivyo, anahitaji kununua vyombo 3 vya chumvi.
Hii itagharimu 3*$2=$6.
Hivyo, atatumia $6+$6=$12 kwa chakula.