Question

Isabella buys a digital camera and pays $7.20 in sales tax. The tax rate is 6%. What is the original cost of the camera?

Answer 1

Answer: $120

Step-by-step explanation:

Let x be the original cost of the camera .

Given: The tax rate = 6%=0.06

The amount of tax paid by Isabella = $7.20

According to the question , we have

$0.06x=7.20$

Divide 0.06 on both sides, we get

$x=\frac{7.20}{0.06}\\\\\Rightarrow x=120$

Hence, the  original cost of the camera = $120

Answer 2

The original cost of the camera is $120.

Explanation:
6%=6/100=0.06. This means to find 6% tax on a sale, we multiply the amount of the sale by 0.06; this gives us 0.06x, since we don't know the cost of the camera.

We know the amount of tax is $7.20, so we have the equation 0.06x=7.20.

Divide both sides by 0.06:
0.06x/0.06 = 7.20/0.06
x=120.