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29 November, 00:03

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

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Answers (1)
  1. 29 November, 00:08
    0
    The answer is D. B and C are proportional.
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