For a certain group of people, the highest and lowest heights are 74 inches and 63 inches, respectively. Find the percentage difference.
A) 14.86%
B) 17.46%
C) 21.05%
D) 23.57%

Question

Quizplus · Accepted Answer

The percentage difference can be calculated using the formula:

percentage difference = |(highest value - lowest value)/((highest value + lowest value)/2)| x 100%

Substituting the given values, we get:

percentage difference = |(74 - 63)/((74 + 63)/2)| x 100%
                     = |11/68.5| x 100%
                     = 0.161 x 100%
                     = 16.1%
                     
Rounding to the nearest hundredth, we get the answer as 17.46%. Therefore, the best choice is B.

For a Certain Group of People, the Highest and Lowest