Chapter 0, Problem 64PR

To determine

The probability of finding nickel or quarter coin from the jar.

Answer to Problem 64PR

  $P=0.54$

Explanation of Solution

Given:

Penny coin = 20

Nickel coin = 15

Dim coin = 3

Quarter coin = 12

Formula used:

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

Calculation:

Total number of coins,

  $\begin{array}{l}TE=20+15+3+12\\ TE=50\end{array}$

Total nickel and quarter coins,

  $\begin{array}{l}PE=15+12\\ PE=27\end{array}$

By the probability formula,

  $\begin{array}{l}P=\frac{PE}{TE}\\ P=\frac{27}{50}\\ P=0.54\end{array}$

Conclusion:

Hence, the probability of finding nickel or quarter coin from the jar is 0.54.