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

### Instruction:
Alex gets paid $500 a week and 10% of his weekly income is deducted as tax. He also pays his weekly water bill for $55 and gives away another 10% of his weekly income as a tithe. How much money does Alex have left?

### Response:
 Alex anakatwa 10% ya 500 ambayo ni 500*10% = $<<500*10*.01=50>>50.
Kiwango chake cha kukatwa ni 50 + 55 + 50 = $155
Anabakiwa na $500 - $ 155 = $<<500-155=345>>345