80% of 20 is 80/100 x 20 = 16
So, kelly has used 16 stamps, and has 4 left
1x•4x•5x=180
10x=180
10/10x=180/10
X= 18
Answer:
I Know the answer because I am in k12 too.
The answer is 37.5%
Step-by-step explanation:
$80 - $50 = $30
$30 * 100 / $ 80 = 37.5%
answer: 37.5% of decrease.
That is impossible but I did some math so there are 2 ways that will equal more than 40.
6.7×6.0=40.2
6.5×6.2=40.3
Hope this helps!
