Question

a survey was conducted to determine the food choices of the 80 students at a picnic. the types of picnic foods are shown in the circle graph. based on the circle graph, how many more students chose pizza than students who chose salad? a 8 b 16 c 32 d 24

Explanation:

Step1: Calculate number of students who chose pizza

The percentage of students who chose pizza is 30% and the total number of students is 80. So the number of students who chose pizza is $80\times30\%=80\times0.3 = 24$.

Step2: Calculate number of students who chose salad

The percentage of students who chose salad is 10% and the total number of students is 80. So the number of students who chose salad is $80\times10\%=80\times0.1 = 8$.

Step3: Find the difference

Subtract the number of students who chose salad from the number of students who chose pizza. $24 - 8=16$.

Answer:

16