Exercise 2 Page p36

To calculate the probability of picking a dime, we use the Probability Formula. P=Number of favorable outcomes/Number of possible outcomesThe 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. 70+ 100+ 80+ 50 = 300 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(dime).

P=Number of favorable outcomes/Number of possible outcomes

SubstituteValues

Substitute values

P(dime)=100/300

ReduceFrac

a/b=.a /100./.b /100.

P(dime)=1/3

The probability of choosing a dime is 13.