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Question

A survey with 20 students is taken.

Find the number of students who prefer course books from Friend P's survey, if there are a total of 900 students in a school.

A
270
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B
360
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C
400
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D
250
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Solution

The correct option is B 360
The survey is taken with 20 students.

The number of students who chose course book in Friend P's survey is 8.

The necessary proportion = 820

The number of students who prefer course book

= 820× 900

= 360

Hence, the number of students who prefer course book = 360

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