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

### Instruction:
The PTA had saved $400 set aside after a fundraising event. They spent a fourth of the money on school supplies. Then they spent half of what was left on food for the faculty. How much money did they have left?

### Response:
 Walitumia $400/4=$<<400/4=100>>100 kununua vifaa vya shule.
Baada ya kununua vifaa vya shule, walikuwa na $400-100=$<<400-100=300>>300 zilizosalia.
Walitumia $300/2=$<<300/2=150>>150 kununua chakula.
Walikuwa na $300-150=$<<300-150=150>>150 zilizosalia.