Question

Sun Lei bought a laptop computer for $1800.

The total cost, including tax, came to $1890.
What is the tax rate?

Answer 1

Subtract to find the amount of tax paid:

1890 - 1800 = 90

Divide the amount of tax by the price of the computer:

90 / 1800 = 0.05

Multiply the decimal by 100:

0.05 x 100 = 5%

The tax rate is 5%