If you pay $2,000 in taxes on an income of $20,000, and a tax of $3,000 on an income of $30,000, then, over this range of income this income tax is
The income tax for 20,000 is 2,000 right? So to how much percent is 2000 of 20000 you have to divide the number and multiply by 100. So 2000/20000 is 0.1 right? Multiply 0.1 worth 100 to get 10% tax. We can check with the 3000 and 30000 also