Tom receives a $12 allowance per month. In the first week, he spends a third of it; in the second week, he spends a quarter of what he has left. How much money does he have left to finish the month?
The first week he spends: $12 * 1/3 = $<<12*1/3=4>>4.
So he has $12 - $4 = $<<12-4=8>>8 left.
In the second week, he spends $8 x 1/4 = $<<8*1/4=2>>2.
So Tom has $8 - $2 = $<<8-2=6>>6 left to finish the month.
#### 6