Chapter 0, Problem 56PR

To determine

The probability of finding blue or red pencils.

Answer to Problem 56PR

  $P=60\%$

Explanation of Solution

Given:

Red pencils = 3

Green pencils = 4

Black pencils = 2

Blue pencils = 6

Formula used:

Probability (P) = $\frac{\text{Possible event}\left(PE\right)}{\text{Total event}\left(TE\right)}\times 100$

Calculation:

Total number of pencils,

  $\begin{array}{l}TE=3+4+2+6\\ TE=15\end{array}$

Total red and blue pencils,

  $\begin{array}{l}PE=3+6\\ PE=9\end{array}$

By the probability formula,

  $\begin{array}{l}P=\frac{PE}{TE}\times 100\\ P=\frac{9}{15}\times 100\\ P=60\%\end{array}$

Conclusion:

Hence, the probability of finding blue or red pencils in the container is 60%.