Question

for a class project, hunter collected data on the ages of eighty customers at an ice cream shop on a saturday afternoon. a partial histogram of his findings is shown above. what percent of the customers were 16 - 31 years old? a) 14% b) 17.5% c) 20% d) 22.5% e) 25%

Explanation:

Step1: Find the frequency of 16 - 31 age - group

From the histogram, the frequency of the 16 - 31 age - group is 14.

Step2: Calculate the total number of customers

The total number of customers is 80.

Step3: Calculate the percentage

The percentage of customers in the 16 - 31 age - group is $\frac{14}{80}\times100\%$.
$\frac{14}{80}\times100\%=\frac{1400}{80}=17.5\%$

Answer:

B. 17.5%