Chapter 13.4, Problem 46E

To determine

To find the probability that a student with a home computer uses it for word processing or playing games.

Answer to Problem 46E

  $\frac{29}{60}$

Explanation of Solution

Given:

A computer club shows that $\frac{2}{5}$ of the students who have computer use them for word processing, $\frac{1}{3}$ use them for playing games and $\frac{1}{4}$ use them for both word processing and playing games.

Calculation:

P (computer used for word processing orplaying games) $=$ P (computer used for word processing) $+$ P (used for playing games) $-$ P (used for both)

  $\begin{array}{l}=\frac{2}{5}+\frac{1}{3}-\frac{1}{4}\\ =\frac{29}{60}\end{array}$