The purchase, without taxes, had a cost of $60.
The sale taxes are 7%
To determine how much is the purchase with taxes, the first step is to determine how much is the 7% of $60. To do so, you have to multiply 60 by 7 and divide it by 100

The 7% corresponds to $4.2
Next, you have to add the tax money to the original price to determine the cost of the purchase including taxes:

The total purchase including taxes is $64.2