Answer:
4/10 or 4/100
Explanation:
100% is 100/100 which is 1. 40% is 40/100 which is 0.4. 40/100 can be simplified to 4/10 by dividing both the numerator and the denominator by 10.
"Per cent", or percent, means "one part in every hundred", so you would simply put your percentage over the denominator of 100, then simplify.
In your case, you would get by this method.
Simplified to the smallest possible fraction, you would get .
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