Difference between revisions of "2005 CEMC Gauss (Grade 7) Problems/Problem 6"
(→See Also) |
(→See Also) |
||
| Line 11: | Line 11: | ||
==See Also== | ==See Also== | ||
| − | + | {{Gauss (Grade 7) box|year=2005|num-b=5|num-a=7}} | |
| − | |||
| − | |||
Revision as of 17:56, 22 October 2014
Problem
At a class party, each student randomly selects a wrapped prize from a bag. The prizes include books and calculators. There are 
prizes in the bag. Meghan is the first to choose a prize. If the probability of Meghan choosing a book for her prize is 
, how many books are in the bag?
Solution
Since Meghan chooses a prize from in the bag and the probability of her choosing a book is , then of the prizes in the bag must be books. Therefore, the number of books in the bag is 
. The answer is 
.
