Mrs. Zepeda has 11 boys and 9 girls in her history class. She will randomly select 1 student to help her grade papers. What is the probability Mrs. Zepeda will select a girl to help her grade papers?

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Mrs. Zepeda has 11 boys and 9 girls in her history class. She will randomly select 1 student to help her grade papers. What is the probability Mrs. Zepeda will select a girl to help her grade papers?

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Alvedeguzviz Alvedeguzviz · Answer 1

Alvedeguzviz Alvedeguzviz

Add 11 and 9 to get the total number of students

11 + 9 = 20

Then divide the total number of students to the number of girls

9/20

Therefore

0.45 probability for a girl to be picked

or

45%

I hope it helps

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