Question

A company that makes a hair care products that have 9,000 people trying new shampoo of the 9,000 people 72 had a mill allergy reaction what percent of people had amid allergy reaction?

Answer 1

Answer: 0.8

Explanation:

Step 1: We make the assumption that 9000 is 100% since it is our output value.

Step 2: We next represent the value we seek with x

Step 3: From step 1, it follows that $100% = 9000

Step 4: In the same vein, x% = 72

Step 5: This gives us a pair of simple equations:

100% = 9000(1)

x% = 72(2)

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS

(left-hand side) of both equations have the same unit (%); we have

100% / x% (Fraction) = 9000 / 72 (Fraction)

Step 7: Taking the inverse (or reciprocal) of both sides yields

x% / 100% (Fraction) = 72 / 9000 (Fraction)

> x=0.8%

Therefore, 72 is 0.8% of 9000