Answer:
2/5
Explanation:
25% is equal to 1/4
Lets think of this as money
If we take .25 and multiply it by 4 we get 100 or 1.00
Lets take 5/20
5/20 is also equal to 25%
For this one, let's change the fraction to an equivalent fraction. To do this I'm going to multiply both the top and bottom by 5.
5*5/20*5
That gets us 25/100
Back to thinking money-- we know that 25/100 is equal to 25%
25/100
We just determined that 25/100 is 25% using the problem above.
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The odd one out-- 2/5
2/5 is equal to 40%
If we think of this fraction as money and we get an equivalent fraction-- 40/100
We can clearly see that that is not 25/100, 1/4, 5/20, or even 25%
Hence making it not equivalent to 25%
Hope this helps! Feel free to ask questions in the comments!