Exercise 2 Page p36

To calculate the probability of picking a dime, we use the Probability Formula. The jar which we are choosing from contains $70$ nickels, $100$ dimes, $80$ quarters, and $50$ one-dollar coins. For the denominator of this formula, the total number of possible outcomes, we need the total number of coins. For the numerator of this formula, the total number of favorable outcomes, we need the total number of dimes. As previously stated, we know that there are $100$ dimes. Now we have enough information to calculate $P(\text{dime}).$ The probability of choosing a dime is $\frac{1}{3}.$