At a recent NAU fotball game cheerleaders were handing out o

At a recent NAU fotball game, cheerleaders were handing out of free souvenirs. They were carting around a large crate which intially contained 13 navy blue t-sherts, 27gold t-sherts,40 navy blue water bottles,30 gold water bottle, and 60 sage water bottles.

If a single item is selected from the crat at random,

What is thr probability it is gold or a t-shert?

Solution

first we count total number of items contained in Crate

=13+27+40+30+60=170

total number of gold or t-shirts=13 navy blue t-sherts+ 27gold t-sherts+.30 gold water bottle=70

so required probability will be 70/170 or 7/17