Acell phone costs $170 and has a tax rate of 7%. write and solve a proportion to find how much tax is paid on the cell phone.

$11.9

Step-by-step explanation:

We are given;

The cost of the cell phone is $170

Tax rate is 7%

We are required to find how much tax is paid on the cell phone.

The tax rate is 7% of the cost of the cell phone

That is;

7% of $170

also; 7/100 of $170

Thus, tax paid = 7/100 × $170

                        = $11.9

Thus, the tax paid on the cell phone is $11.9

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.