Question

A cosmetic company tested a new lotion. Of the 2,500 people tested 15 had an allergic reaction. What percentage of the people had an allergic reaction?

Answer 1

0.6%. 100% divided by 2,500 people means each person is worth 0.04%. 0.04 times 15 is 0.6

Answer 2

0.6%

Explanation:

The cosmetic company tested a new lotion on 2500 people.

Number of people had the allergic reaction = 15

so percentage of allergic patients =
`\frac{\text{number of allergic people}}{\text{total people taken for test}}* 100`

=
`(15)/(2500)* 100`

=
`(15)/(25)` = 0.6%

percentage of the people is 0.6%