<human>:  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?
<bot>: How much tax does Alex pay? ** His income tax is 10% of 500 which is 500*10% = $<<500*10*.01=50>>50.
How much does Alex give away? ** His tithe costs 10% of $500 which is 500*10% = $<<500*10*.01=50>>50.
How much does Alex spend? ** The total expenses are 50 + 55 + 50 = $155
How much money does Alex have left? ** He is then left with $500 - $ 155= $<<500-155=345>>345.
#### 345