Question

Using the frequency table below what is the probability of selecting a boy and a person who bought 10 up to 20 lunches

Answer 1

Answer:

1/3

Step-by-step explanation:

$\left[\begin{array}{cccc}Bought\ Lunch&Boys&Girls&Total\\0\ up\ to\ 10&10&5&15\\10\ up\ to\ 20&20&25&45\\Total&30&30&60\end{array}\right]$

The number of boys who bought 10 to 20 lunches is 20.

The total number of students is 60.

So the probability is 20/60 = 1/3.