Question

a cosmetics company tested a new lotion. of the 2,500 people tested, 15 had an allergic reaction. what percent of the people tested did not have an allergic reaction to the new lotion? 0.006% 99.4% 0.6% 99.994%

Explanation:

Step1: Find number of non - allergic people

$2500 - 15=2485$

Step2: Calculate the percentage

$\frac{2485}{2500}\times100\% = 99.4\%$

Answer:

99.4%