MATHEMATICS HIGH SCHOOL

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

Answers

Answer 1

Answer:

Answer:

Correct option is:

D) B and C

Step-by-step explanation:

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.

Percentage of teachers having second job is calculated by the formula:

$(Teachers having second job)/(Total number of teachers)* 100$

So, percentage of second job teachers of survey A,B,C and D is:

A B C D

Percentage 25.45% 30% 30% 40%

Hence, two surveys that are proportional are

B and C

Hence, Correct option is:

D) B and C

Answer 2

Answer: The answer is D. B and C are proportional.

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Answers

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Answers

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Answers

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Answers

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Answers

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