Question

Here are the ages in years) of 10 professors at a college.41, 75, 34, 55, 49, 67, 55, 33, 43, 53What is the percentage of these professors who are younger than 36?|[%Х5?

Answer 1

We will proceed as follows:

First, we separate the number of professors that are younger than 36:

`\begin{cases}a<36\colon34,33 \\ \\ a\ge36\colon41,75,55,49,67,55,43,53\end{cases}`

So, there are two professoprs that are younger than 36 among all 10 professors. So the percentage is the following:

`x=(2\cdot10)/(100)\Rightarrow x=20`

So, there is a 20% that is younger than 36 years old.