A cosmetic company tested a new lotion. Of the 2,500 people tested, 15 had an allergic reaction. What percent of the people test
ed had an allergic reaction to the new lotion?
2 answers:
Answer:
People had an allergic reaction = 0.6%
Step-by-step explanation:
Cosmetic company has tested a new lotion on = 2500 people
Allergic reactions were observed in the persons = 15
As we know to calculate the percentage we apply the formula
Percentage people had an allergic reaction
= ![\frac{\text{Number of persons having allergic reactions}}{\text{Total number of persons under test}}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctext%7BNumber%20of%20persons%20having%20allergic%20reactions%7D%7D%7B%5Ctext%7BTotal%20number%20of%20persons%20under%20test%7D%7D)
= ![\frac{15}{2500}\times 100](https://tex.z-dn.net/?f=%5Cfrac%7B15%7D%7B2500%7D%5Ctimes%20100)
= 0.6%
People had an allergic reaction = 0.6%
15/2500 *100 = 0.6%
0.6% is the answer .
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