A. A survey of 110 teachers showed that 28 of them have a second job.
B. A survey of 90 teachers showed that 27 of them have a second job.
C. A survey of 70 teachers showed that 21 of them have a second job.
D. A survey of 80 teachers showed that 32 of them have a second job.
In math class, 4 students complete individual surveys to determine the percentage of high school teachers that have a second job. Which two surveys show proportional results?
A) A and B
B) B and D
C) A and D
D) B and C
c?
If your surveys are the following:
A. A survey of 110 teachers showed that 28 of them have a second job.
B. A survey of 90 teachers showed that 27 of them have a second job.
C. A survey of 70 teachers showed that 21 of them have a second job.
D. A survey of 80 teachers showed that 32 of them have a second job.
Then the answer is B and C
usa test prep
that's better
To determine which two surveys show proportional results, we need to compare the percentages of high school teachers with a second job in each survey.
To find the percentage, we divide the number of teachers with a second job by the total number of teachers surveyed and then multiply by 100.
Let's calculate the percentages for each survey:
A) A survey of 110 teachers showed that 28 of them have a second job.
Percentage = (28/110) * 100 = 25.45%
B) A survey of 90 teachers showed that 27 of them have a second job.
Percentage = (27/90) * 100 = 30%
C) A survey of 70 teachers showed that 21 of them have a second job.
Percentage = (21/70) * 100 = 30%
D) A survey of 80 teachers showed that 32 of them have a second job.
Percentage = (32/80) * 100 = 40%
Now, let's compare the percentages to find which two surveys show proportional results:
A) Percentage = 25.45%
B) Percentage = 30%
C) Percentage = 30%
D) Percentage = 40%
From the calculations, it can be seen that surveys B and C both show the same percentage of teachers having a second job (30%). Therefore, the correct answer is option D) B and C.