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

### Instruction:
Alicia has to buy some books for the new school year. She buys 2 math books, 3 art books, and 6 science books, for a total of $30. If both the math and science books cost $3 each, what was the cost of each art book?

### Response:
 Jumla ya gharama ya vitabu vya hesabu na sayansi ni vitabu 2 + 6 = <<2+6=8>>8.
Kwa kuwa bei ya kila kitabu cha hesabu na sayansi ni $3, gharama ya vitabu hivi ni 8 * 3 = $<<8*3=24>>24.
Jumla ya gharama ya vitabu vya hesabu, sayansi, na sanaa ni $30, maana yake gharama ya vitabu vya sanaa ni $30 - $24 = $<<30-24=6>>6.
Ikiwa Alicia alinunua vitabu 3 vya sanaa, gharama ya kila kitabu cha sanaa itakuwa $6/3 = $<<6/3=2>>2.