Answer: 30%
Step-by-step explanation:
Method 1:
The original fraction is 
To convert to a percent, the denominator should be equal to 100 (since percent is per 100)
Multiply the top and bottom by 10

Since the numerator is 30, 3/10 as a percent is 30%
Method 2:
The original fraction is 
To convert to a percent, first convert the fraction to a decimal (do 3 ÷ 10)
<u>0.3</u>
10 | 3 0
-30
-------------
0
You get 0.3
Now multiply the decimal by 100
0.3 * 100 = 30
30%
Method 3:
The original fraction is 

cross-multiply to solve the equation
30%