Final answer:
To find the percent of a number, divide the part by the whole and multiply by 100.
Step-by-step explanation:
To find the percent, we can use the formula:
Percent = (Part/Whole) x 100
In this case, the part is 50 and the whole is 125. So the percent is:
Percent = (50/125) x 100 = 40%.
Therefore, the correct answer is a. 40%.
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