SOLUTION: There are 25 students names in a hat. You choose 5 names. Three are boys names and two are girls. How many of the 25 names would you expect to be boys names? I don't understand

Question 965671: There are 25 students names in a hat. You choose 5 names. Three are boys names and two are girls. How many of the 25 names would you expect to be boys names?
I don't understand this at all.
Answer by Edwin McCravy(20056) (Show Source): You can put this solution on YOUR website!
There are 25 students names in a hat. You choose 5 names. Three are boys names
and two are girls. How many of the 25 names would you expect to be boys names?

Here is how we think it out:

3 names OUT OF the 5 names are boy's names.

"OUT OF" means "OVER".  <--IMPORTANT!  REMEMBER IT!

3 OUT OF 5 means the fraction 3 OVER 5 or .

So we would expect ths of the 25 names to be boy's names.

ths of 25 is 15 students.

So we would expect 15 of the names to be boy's names.

Edwin

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