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

### Instruction:
 John has to pay taxes.  He earned $100,000 for the year.  He has $30,000 in deductions.  The first $20,000 of taxable income is taxed at 10%.  The rest is taxed at 20%.  How much does he pay in taxes?


### Response:
 Il a 100 000 $ - 30 000 $ = 70 000 $ de revenu imposable.
Il paie 10 % sur 20 000 $ et 20 % sur 50 000 $. La tranche de 10 % paie 20 000 $ * 0,1 = 2 000 $.
La tranche de 20 % signifie qu'il paie 50 000 $ * 0,2 = 10 000 $.
Son montant total d'impôt est de 2 000 $ + 10 000 $ = 12 000 $.