Question

In a class of 60 students, on average, 8 will be left-handed. If a class include 36 “lefties”. estimate how many students are in class. The class has approximately... students.

Answer 1

If a in a class of 60 students, on average, 8 will be left-handed

then, the percentage of lefties is:

`(8)/(60)=(2)/(15)`

If a class include 36 “lefties”. then the total N is given by:

`N\cdot(2)/(15)=36`

solve for N:

`\begin{gathered} N=36\cdot(15)/(2) \\ N=270 \end{gathered}`

The class has 270 students