Chapter 6.1, Problem 19PPE

To determine

To find: Number of right-handed and left-handed students in the class

Answer to Problem 19PPE

Number of left-handed students $=3$

Number of right-handed students $=27$

Explanation of Solution

Given information:

Let $x$ denotes number of left-handed students.

As the number of right-handed students in a mathematical class is nine times the number of left-handed students,

Number of right-handed students $=9x$

Total number of students in a class $=30$

So,

Number of left-handed students $+$ Number of right-handed students $=30$

  $\begin{array}{l}\Rightarrow x+9x=30\\ \Rightarrow 10x=30\\ \Rightarrow x=\frac{30}{10}=3\end{array}$

So,

Number of left-handed students $=x=3$

Number of right-handed students $=9x=9\left(3\right)=27$

Calculation: Detailed explanation / work out of the complete problem.