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a drawing is held every Friday in Ms. Peterson's class to determine who feeds the pet gerbil for the next week if there are 15 girls and 13 boys in the class what is the probability that a boy name would be selected

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AL2006id

There are  (15 + 13) = 28 students in Ms.Peterson's class.

13 of them are boys.

The probability of drawing a boy's name is 

                     (boys) / (total) =

                          13 / 28 =  0.4643...  =  46.4% . (rounded)