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

### Instruction:
Benjamin went to McDonald's to buy something for dinner. He bought a salad, a burger, and two packs of fries. He paid in total $15. How much did the burger cost, if one pack of fries was for $2 and the salad was three times that price?

### Response:
 Benjamin alilipa kwa chipsi 2 * 2 = $<<2*2=4>>4.
Saladi ilikuwa mara tatu ya bei ya pakiti moja ya chipsi, hivyo iligharimu 3 * 2 = $<<3*2=6>>6.
Alilipa kwa chakula cha jioni $15, hivyo gharama ya burger ilikuwa 15 - 6 - 4 = $<<15-6-4=5>>5.