Question

Mr. Jones has a box of t-shirts to distribute to his students for Field Day. There are 30 red and 60 blue t- shirts in the box. If the first student chooses a t-shirt without looking , what is the probability that she will choose a blue t- shirt?

Answer 1

Given:

Number of blue t-shirst, B=60.

Number of red t-shirs, R=30.

The number of total t-shirts is,

`\begin{gathered} T=B+R \\ T=60+30 \\ T=90 \end{gathered}`

The probabilty of choosing a blue t-shirt is,

`\begin{gathered} P(B)=(B)/(T) \\ =(60)/(90) \\ =(2)/(3) \end{gathered}`

Therefore, the probabilty of choosing a blue t-shirt is 2/3.