Question

Last week a jacket cost $39.50. This week the price of the jacket decreased by $4.50. What was the percent of the decrease? Round to the nearest tenth.

Answer 1

it might be 0.11 or 0.12%

Answer 2

First, let's create an equation for this problem. Let x represent the percent decrease.
$\frac{4.50}{39.50}$ = $\frac{x}{100}$

Next, cross multiply. 
39.50x = 450

Now, all you would need to do is isolate the x. To do this, you would divide both sides of the equal sign by 39.50. 
x = 11.3924050633

Remember to round the answer to the nearest tenth. 
11.3924050633 ≈ 11.40%

The percent decrease is 11.40%. 

I hope this helps!