Question

The price of a notebook was $3.40 yesterday today the price spell to $3.15 find the percentage decrease rancher answer to the nearest 10th of a percent

Answer 1

7.4%

Explanation:

The cost decreased by 3.40 - 3.15 = 0.25

The percentage decrease can be found by using the formula shown below:

Percentage Decrease =
`(New-Old)/(Old)*100`

Where

"New" is the newest, latest price (3.15)

"Old" is the first price (3.40)

Now we find it:

`(3.15-3.40)/(3.40)*100\\=(-0.25)/(3.40)*100\\=0.0735*100\\=7.35`

So percentage decrease is 7.4% (rounded to nearest tenth)