Question

products had 3,000 people try a new shampoo. of the 3,000 people, 12 had a mild allergic reaction. what percent of the people had a
complete the percent proportion.
12/3,000 = p/100
(type an integer or a decimal)
% of the people had a mild allergic reaction.
(type an integer or a decimal)

Explanation:

Step1: Simplify the proportion

We have the proportion \(\frac{12}{3000}=\frac{p}{100}\). Cross - multiply to get \(3000p = 12\times100\). Then \(p=\frac{12\times100}{3000}\).

Step2: Calculate the value of \(p\)

First, \(12\times100 = 1200\). Then \(\frac{1200}{3000}=\frac{1200\div1200}{3000\div1200}=\frac{1}{2.5}=0.4\)

Answer:

\(0.4\)